<div><div><p><strong>Researchers led by </strong><a target="_blank" rel="noopener noreferrer" href="https://kudova.group.uochb.cz/en"><strong>Eva Kudová</strong></a><strong> from IOCB Prague and Jitka Viktorová from UCT Prague have identified new androstane-based steroid derivatives that can significantly improve the effectiveness of existing antibiotics against multidrug-resistant </strong><i><strong>Staphylococcus aureus</strong></i><strong>.</strong></p></div></div><div><p>The team screened dozens of natural steroidal hormones and synthetic derivatives to see whether they could block bacterial efflux pumps – mechanisms that bacteria use to eject antibiotics and survive treatment. Two compounds emerged as particularly promising: they inhibited efflux pumps and lowered the effective doses of antibiotics such as ciprofloxacin and erythromycin.</p><p>Further analysis showed that one of the compounds also suppressed genes linked to bacterial virulence. Another key finding is that the most active molecules are non-toxic to human immune cells and showed no detectable endocrine activity, suggesting a favorable safety profile.</p><p>These findings support the idea that rationally designed steroid-based molecules could act as antibiotic adjuvants, helping existing drugs overcome bacterial resistance.</p><p><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/IOCB_Prague_Steroidal_hormones_and_neurosteroids_novel_therapeutic_strategies_in_bacterial_infections_8e5d2a7b48.jpg" alt="IOCB Prague: Steroidal hormones and neurosteroids – novel therapeutic strategies in bacterial infections" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_IOCB_Prague_Steroidal_hormones_and_neurosteroids_novel_therapeutic_strategies_in_bacterial_infections_8e5d2a7b48.jpg 222w," sizes="100vw" width="1258" height="886"></p><blockquote><h4><strong>Original Article</strong></h4><h4><a target="_blank" rel="noopener noreferrer" href="https://www.sciencedirect.com/science/article/pii/S0223523426001613?via%3Dihub"><strong>Steroidal hormones and neurosteroids - novel therapeutic strategies in bacterial infections: Design, synthesis, and biological evaluation</strong></a></h4><p>Daniela Brdová, Bára Křížkovská, Jan Špaček, Zdeněk Míchal, Eva Jablonská, Ondřej Strnad, Hana Chodounská, Eszter Szánti-Pintér, Marina Morozovová, Václav Hanžl, Jan Tkadlec, Martijn Riool, Jan Lipov, Jitka Viktorová, Eva Kudová&nbsp;</p><p><i><strong>Eur. J. Med. Chem., 2026, 308, 118716</strong></i></p><p><a target="_blank" rel="noopener noreferrer" href="https://doi.org/10.1016/j.ejmech.2026.118716">https://doi.org/10.1016/j.ejmech.2026.118716</a></p><h6>licensed under <a target="_blank" rel="noopener noreferrer" href="https://creativecommons.org/licenses/by/4.0/"><strong>CC-BY 4.0</strong></a></h6></blockquote><h4><strong>Abstract</strong></h4><p>The global rise of antibiotic resistance necessitates novel therapeutic strategies for infectious diseases. Inhibition of bacterial efflux pumps, which contribute to multidrug resistance, represents a promising approach to restore or even increase the efficacy of existing antibiotics. Using fluorescence-based ethidium bromide accumulation, broth microdilution, and checkerboard assays, we evaluated 26 endogenous steroidal hormones and neurosteroids, along with 30 synthetic derivatives, for their ability to enhance antibiotic susceptibility in multidrug-resistant <i>Staphylococcus aureus</i>. Structure-activity relationship analysis identified compounds <strong>13</strong> and <strong>16</strong> as lead candidates, exhibiting strong efflux pump inhibition and marked reductions in the minimum inhibitory concentrations of ciprofloxacin and erythromycin. Both compounds showed additive effects in checkerboard assays. Modifications at C-3 (polar substitution) and C-17 (3α,5β-stereochemistry and nonpolar substitution) were essential for potent efflux inhibition and sensitization, although these modifications were not additive when combined. Transcriptome analysis further revealed that compound <strong>13</strong> significantly downregulated <i>S. aureus</i> virulence-associated genes when administered alone or in combination with antibiotics. Cytotoxicity assessment in human peripheral blood mononuclear cells and receptor transactivation assays for estrogen, androgen, and progesterone receptors indicated that the most active derivatives were non-toxic and lacked detectable endocrine activity, suggesting a favorable safety profile. Overall, these findings support the concept that rationally designed andostane-based steroidal scaffolds can function as competitive bacterial efflux pump inhibitors and serve as potential antibiotic adjuvants to mitigate efflux-mediated resistance.</p><h4><strong>Instrumentation</strong></h4><h5><strong>Structural characterization</strong></h5><ul><li><strong>AVANCE III 400 MHz NMR spectrometer</strong> (Bruker)</li><li><a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/library?mainauthorItems=3&amp;search=LTQ+Orbitrap+XL"><strong>LTQ Orbitrap XL HRMS</strong></a> (Thermo Fisher Scientific, ESI)</li></ul></div>

Steroidal hormones and neurosteroids – novel therapeutic strategies in bacterial infections

<p><strong>Wiley, a global leader in authoritative content and research intelligence for the advancement of scientific discovery, innovation and learning, today announced the release of additional data to its IR and Raman spectral libraries, significantly broadening compound coverage, including materials, polymers, minerals, and others.</strong></p><p>This latest release includes the first installment of Raman spectra from <strong>Wiley's collaboration with the American Museum of Natural History (AMNH), announced earlier this spring</strong>, drawing from one of the world's most important mineral collections.</p><p>“<i>Researchers depend on reference data as a foundation for sound scientific decisions</i>,” said Graeme Whitley, senior director, data science solutions at Wiley. “<i>Continuous updates ensure scientists always have the most current, reliable reference libraries at their fingertips, helping them work faster and make confident decisions when it matters most.</i>”</p><p><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Wiley_Wiley_expands_its_trusted_IR_and_Raman_spectral_library_collections_helping_analytical_labs_make_faster_more_confident_decisions_1a54aaad3a.jpg" alt="Wiley: Wiley expands its trusted IR and Raman spectral library collections—helping analytical labs make faster, more confident decisions" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Wiley_Wiley_expands_its_trusted_IR_and_Raman_spectral_library_collections_helping_analytical_labs_make_faster_more_confident_decisions_1a54aaad3a.jpg 245w," sizes="100vw" width="1600" height="856"></p><h4><strong>Summary of updates:</strong></h4><h5><strong>KnowItAll Raman Spectral Library Collection</strong></h5><ul><li><strong>Added: </strong>1,213 spectra</li><li><strong>Now contains: </strong>29K+ spectra</li></ul><p><strong>2 new databases:</strong></p><ul><li>Raman – American Museum of Natural History Minerals – Wiley – 198 spectra</li><li>Raman – Microbiology – 71 spectra</li></ul><p><strong>Spectra added to databases:</strong></p><ul><li>Raman – Consumer Goods &amp; Food-Related Compounds – +104</li><li>Raman – Drugs – +128</li><li>Raman – Materials – +132</li><li>Raman – Minerals – +233</li><li>Raman – Polymers – +5</li><li>Raman – Pigments &amp; Dyes – +342</li></ul><h5><strong>KnowItAll IR Spectral Library Collection</strong></h5><ul><li><strong>Added: </strong>949 spectra</li><li><strong>Now contains: </strong>344K+ spectra</li></ul><p><strong>7 new databases:</strong></p><ul><li>ATR-IR – Clinical – 364 spectra</li><li>ATR-IR – Materials – 10 spectra</li><li>ATR-IR – Pigments &amp; Dyes – 420 spectra</li><li>ATR-IR – Polymers – 21 spectra</li><li>IR – Clinical – 20 spectra</li><li>IR – Materials – 17 spectra</li><li>IR – Microbiology – 75 spectra</li></ul><p><strong>Spectra added to databases:</strong></p><ul><li>IR – Minerals – +5</li><li>IR – Polymers – +17</li></ul><p>Spectral library subscribers automatically gain access to new data, ensuring labs always have the most current, reliable reference libraries to improve analysis, reduce errors, and increase productivity.</p><ul><li>Learn more at: <a target="_blank" rel="noopener noreferrer" href="https://sciencesolutions.wiley.com/spectral-databases/"><strong>www.sciencesolutions.wiley.com/spectral-databases</strong></a></li><li>Existing subscribers can access step-by-step guidance on updating their KnowItAll databases at <a target="_blank" rel="noopener noreferrer" href="https://sciencesolutions.wiley.com/how-to-update-knowitall-databases"><strong>https://sciencesolutions.wiley.com/how-to-update-knowitall-databases</strong></a></li></ul><h5><strong>Wiley Spectral Databases</strong></h5><p>Wiley's spectral databases are consistently evolving to meet today's research demands, covering multiple spectral techniques across a wide range of applications including polymers, materials, environmental, forensics, toxicology, pharmaceutical, biotech, automotive, aerospace, food, cosmetics, and more. Built on rigorous quality protocols, Wiley delivers industry-leading spectral data and intelligent tools to accelerate analysis and deliver deeper insights — making it the authoritative, trusted source that analytical labs worldwide rely on.&nbsp;</p><h5><strong>About Wiley</strong></h5><p>Wiley (NYSE: WLY) is a global leader in authoritative content and research intelligence for the advancement of scientific discovery, innovation, and learning. With more than 200 years at the center of the scholarly ecosystem, Wiley combines trusted publishing heritage with AI-powered platforms to transform how knowledge is discovered, accessed, and applied. From individual researchers and students to Fortune 500 R&amp;D teams, Wiley enables the transformation of scientific breakthroughs into real-world impact. From knowledge to impact—Wiley is redefining what's possible in science and learning.&nbsp;</p>

Wiley expands its trusted IR and Raman spectral library collections

<p><strong>Our Library never stops expanding. What are the most recent contributions to LabRulezICPMS Library in the week of 4th May 2026? Check out new documents from the field of spectroscopy/spectrometry and related techniques!</strong></p><blockquote><p><span style="font-size:20px;">👉 </span><a target="_blank" rel="noopener noreferrer" href="https://icpms.labrulez.com/library"><span style="font-size:20px;"><strong>SEARCH THE LARGEST REPOSITORY OF DOCUMENTS ABOUT SPECTROSCOPY/SPECTROMETRY RELATED TECHNIQUES</strong></span></a></p></blockquote><blockquote><p><strong>👉 Need info about different analytical techniques?</strong> Peek into <a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/library"><strong>LabRulezLCMS</strong></a> or <a target="_blank" rel="noopener noreferrer" href="https://gcms.labrulez.com/library"><strong>LabRulezGCMS</strong></a> libraries.</p></blockquote><p>This week we bring you application notes by<strong> KNAUER, Shimadzu, </strong>and <strong>Thermo Fisher Scientific!</strong></p><h3><strong>1. KNAUER: Analysis of HPLC fractions by Benchtop NMR</strong></h3><ul><li>Application note</li><li><a target="_blank" rel="noopener noreferrer" href="https://icpms.labrulez.com/labrulez-bucket-strapi-h3hsga3/knauer_hplc_benchtop_nmr_web_638c60e13c.pdf"><strong>Full PDF for download</strong></a></li></ul><p>Preparative HPLC is essential for isolating compounds and removing impurities in pharmaceutical and chemical industries. Non-destructive, fast analysis is preferred to maintain yield and enable at-line monitoring, avoiding lengthy sample preparation. Recent advancements in benchtop NMR spectrometers (up to 90 MHz) allow quick analysis without deuterated solvents. In this proof-of-concept study we purified a pharmaceutical sample via HPLC and confirmed its identity using benchtop NMR. Fractions (0.7–4.4 mM) were analyzed without preparation, using only 300 µL per sample, ensuring rapid batch control with no product loss. This study demonstrates the seamless integration of HPLC and benchtop NMR.</p><h4><strong>Experimental</strong></h4><h5><strong>Preparative HPLC Method</strong></h5><p>Eluent 20:80 Ethanol/water, isocratic mode, flow rate 12.5 ml/min, detection UV254 nm 2 Hz, 500 µl stacked injection, automated fractionation with threshold function, column temperature ambient, Column Eurospher II 100-10 C18 150x20 mm&nbsp;</p><h5><strong>Analytical HPLC Method</strong></h5><p>Eluent 20:80 Ethanol /water + 0.1% formic acid, isocratic mode, flow rate 1 ml/min, detection UV254 nm 10 Hz, 5 µl partial loop injection, column temperature 25 °C, Column <a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/products/1633"><strong>Eurospher II 100-5 C18</strong></a> 150x4 mm&nbsp;</p><h5><strong>NMR Method&nbsp;</strong></h5><p>NMR spectra were acquired on a <strong>Magritek Multi-X Ultra 80 MHz benchtop NMR system</strong> using an adapted WET sequence for solvent suppression. 32 scans were acquired with a repetition time of 15s. WET parameters were adjusted for each sample to yield optimal suppression for all solvent signals. Pooled HPLC fractions were analysed directly without addition of deuterated solvents or other sample preparation.</p><h4><strong>Conclusion</strong></h4><p>This proof-of-concept study successfully shows that HPLC and benchtop NMR can be used together easily. Samples can be analyzed non-destructively within minutes and without any further preparation due to highly efficient suppression of multiple solvent signals. Compounds can be identified without the need of reference standards. This study shows that NMR can provide a valid compatible alternative detector for HPLC fraction analysis.</p><h3><strong>2. Shimadzu: DIC Analysis in High-Speed Tensile Test of CFRP</strong></h3><ul><li>Application note</li><li><a target="_blank" rel="noopener noreferrer" href="https://icpms.labrulez.com/labrulez-bucket-strapi-h3hsga3/an_01_00854_en_fb6c68b858.pdf"><strong>Full PDF for download</strong></a></li></ul><h4><strong>User Benefits</strong></h4><ul><li>The <a target="_blank" rel="noopener noreferrer" href="https://icpms.labrulez.com/library?mainauthorItems=1&amp;search=HPV-X3"><strong>HPV-X3</strong></a> is suitable for observation of fracture of brittle materials such as CFRP because it has a maximum recording speed (framerate) of 20 Mfps.&nbsp;</li><li>The HPV-X3 provides improved DIC analysis performance, as its resolution is 3 times higher than that of the conventional highspeed video camera.</li><li>The HITS-TX impact testing machine enables testing at a maximum speed of 20 m/s</li></ul><p>Carbon fiber reinforced plastic (CFRP) is a material with particularly high specific strength, even among composite materials, and used in various applications such as transport aircraft, taking advantage of its excellent mechanical properties. Because CFRP consists of carbon fibers and resin, it shows complex fracture behavior, and brittle fracture progresses from damage as the point of origin. Since fracture proceeds instantaneously, a high-speed video camera with a high recording speed is necessary when observing fracture of CFRP. One method for measuring strain in a high-speed tensile test is Digital Image Correlation (DIC), which visualizes the distribution of strain at the specimen surface by comparing a random pattern on the specimen surface before and after deformation. Thus, a high-speed video camera with a high resolution is also necessary in order to improve the DIC performance.&nbsp;</p><p>Newly-developed <a target="_blank" rel="noopener noreferrer" href="https://icpms.labrulez.com/library?mainauthorItems=1&amp;search=HPV-X3"><strong>Hyper Vision HPV-X3 high-speed video camera</strong></a> is extremely well-suited to DIC analysis of CFRP, as its recording speed is 2 timesfaster and itsresolution is 3 times higher than the conventional HPV-X2. In this experiment, a high-speed tensile test of CFRP was conducted using a HITS-TX high-speed tensile testing machine. The condition of the test was observed with the new HPV-X3, and the strain distribution of the CFRP test piece was clarified by a DIC analysis of the recorded images.</p><h4><strong>Test Piece and Test Instruments</strong></h4><p>A CFRP quasi-isotropic laminate was used as the test piece. Aluminum foil was glued to the back side of the test piece, and the timing when the electrical conduction of the aluminum foil was interrupted by fracture of the test piece was used as the trigger for video recording. The HITS-TX was used in the highspeed tensile test. The HPV-X3 was used in fracture observation, and for comparison, the fracture process was also recorded with the conventional HPV-X2 camera. Fig. 1 shows the condition of the test, and Table 1 and Table 2 show the equipment composition and test conditions, respectively.</p><h4><strong>DIC Analysis Results in High-Speed Tensile Test</strong></h4><p>Fig. 3 shows the DIC analysis results in the high-speed tensile test. The color bar was set to display the color purple at around 0 % strain and red at around 2 % strain. Fig. 3 (1) is an image at the start of the test. After the test started, strain in the 45˚ direction concentrated from the lower left to the right central area, as can be seen in Fig. 3 (2). Then, as the test progressed, a condition of increasing strain in the initial area of strain concentration can be seen in Fig. 3 (3) to (9). A crack occurs in Fig. 3 (10), and strain decreases in the crack area. Following this, the test piece fractured completely in Fig. 3 (11) and (12), and a decrease in the strain in the area around the crack could be observed.</p><h4><strong>Conclusion</strong></h4><p>A high-speed tensile test of CFRP was conducted using a HITSTX high-speed tensile testing machine and the newlydeveloped HPV-X3 high-speed video camera, and the strain distribution at the time of test piece fracture was visualized by a DIC analysis. Because the HPV-X3 offers a 3 times higher resolution and a 2 times faster recording speed than the conventional device, it is a suitable high-speed video camera for fracture observation and DIC analysis in impact tests of brittle materials such as CFRP. The measurement system introduced in this Application News article is a useful tool for the development of composite materials.</p><h3><strong>3. Thermo Fisher Scientific: Polymer analysis using femtosecond-laser-ablation depth profiling</strong></h3><ul><li>Application note</li><li><a target="_blank" rel="noopener noreferrer" href="https://icpms.labrulez.com/labrulez-bucket-strapi-h3hsga3/xps_depth_profiling_polymer_analysis_appnote_c731e2e7e0.pdf"><strong>Full PDF for download</strong></a></li></ul><p>X-ray photoelectron spectroscopy (XPS) is an essential polymer characterization technique that can identify not just the elemental composition but also the chemical state of polymer samples. This allows the chemical bonding environment to be deduced and, as a result, the polymer species can be identified. This can all be achieved with minimal sample preparation thanks to the built-in charge-compensation systems found in XPS instruments, which simplify the analysis of insulating samples.&nbsp;</p><p>The introduction of gas cluster ion sources (GCIS), such as the Thermo Scientific™ MAGCIS Dual Mode Ion Source, marked a major step forward in polymer analysis. Unlike monatomic ion beams, GCIS are able to clean surface contamination, and etch away layers of sample material, without damaging the underlying chemistry of organic samples such as polymers. As a result, GCIS has allowed chemical-damage-free analysis to reach micrometers below the sample surface. This depth of analysis can be highly time consuming, however, and total experimental times can range from multiple hours to days.&nbsp;</p><p>The addition of femtosecond-laser-ablation (fs-LA) technology is alleviating this, allowing for XPS spectra to be collected from a depth of tens of µm into a sample in a matter of minutes. This is because the laser ablation occurs on the femtosecond timescale (i.e., nearly instantaneously), effectively eliminating the material removal time of the depth profile. Additionally, unlike other material removal techniques such as atomic ion beam impact (where a collision cascade effect is induced to remove surface material) fs-LA is capable of removing material without chemical damage due to the ultrashort columbic explosion process used to eject the material. The resulting profile is therefore representative of the actual sample chemistry.</p><h4><strong>Paint layer analysis&nbsp;</strong></h4><p>In traditional ion-beam depth profiling, analytical depths are generally limited to several hundred nanometers, up to a micrometer. This means that it is extremely difficult to analyze the interfaces between multiple micrometer-thick layers in a sample without the use of additional techniques such as ultralow-angle microtome (ULAM) sectioning.¹ The introduction of fs-LA technology, however, allows micrometers of material to be removed rapidly, enabling the characterization of layered samples.&nbsp;</p><p>As an example, a multi-layer paint specimen (provided by the University of Surrey, UK) was depth profiled using the <a target="_blank" rel="noopener noreferrer" href="https://icpms.labrulez.com/products/2206"><strong>Thermo Scientific™ Hypulse™ Surface Analysis System</strong></a>. The sample consists of an aluminum substrate coated with a 5 µm layer of polyurethane primer followed by a 25 µm PMMA/PVdF topcoat.</p><p>The depth profile was generated using a 1,030 nm laser with an energy of 250 µJ for ablation, along with a 30 µm X-ray spot size for data collection. XPS spectra were collected after each ablation cycle to obtain an atomic concentration plot through both paint layers into the substrate material (Figure 2).&nbsp;</p><p>5 distinct regions throughout the analyzed depth can be seen. The top surface of the sample consists of an adventitious layer of carbon contamination, which is commonly found on samples exposed to air. The second layer is the 25 µm PVdF/PMMA topcoat, and the third layer is the PU primer. Between the primer and the final aluminum substrate layer, a clear increase in adventitious carbon is observed, similar to the signal seen at the top sample surface. This suggests residual carbon contamination was present on the substrate before the paint layers were applied.&nbsp;</p><p>It would take hours to produce the XPS depth profile shown in Figure 2 using traditional ion beam approaches. Even with the use of a monatomic beam with a high energy per atom, the length of the analysis could still be just as long, depending on the sample material, and would sacrifice the chemistry of any organic/polymeric materials. The combination of fs-LA depth profiling and snapshot XPS acquisition, meanwhile, can reduce the experimental time to less than 20 minutes without inducing any chemical damage to the sample surface.</p><h4><strong>Summary&nbsp;</strong></h4><p>One of the most critical aspects of successful polymer XPS depth profiling is the preservation of the sample chemistry during material removal. Additionally, experiment time can be a significant limiting factor, and thicker samples could lead to reduced time for repeat experiments. The femtosecond laser ablation capabilities of the Hypulse Surface Analysis System provide fast, efficient, and chemical-damage-free material removal from a sample surface, enabling analysis multiple micrometers into a sample. This means that hidden sample interfaces, that were largely inaccessible before, can now be analyzed easily and efficiently</p>

News from LabRulezICPMS Library - Week 19, 2026

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The Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences (IOCB Prague) is a leading scientific institution in the Czech Republic, recognized internationally. Its primary mission is basic research in the fields of chemical biology and medicinal chemistry, organic and material oriented chemistry, chemistry of natural compounds, biochemistry and molecular biology, physical chemistry, theoretical chemistry, and analytical chemistry. 

Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences

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Shimadzu UV-1900i Plus UV-VIS spectrophotometer

UV-1900i Plus delivers 1 nm resolution, ultra-fast scanning, and intuitive operation for precise UV-Vis analysis compliant with JP, USP, and EP.

Shimadzu UV-2600i Plus, UV-2700i Plus UV-VIS-NIR Spectrophotometer

Shimadzu UV-2600i Plus and UV-2700i Plus spectrophotometers deliver high performance with flexible wavelength ranges, advanced optics, and efficient software control.

<h4><strong>Versatile, Expandable Mid-Range UV Spectrophotometers for Diverse Applications</strong></h4><section><section><section><ul><li><strong>The UV-2600i Plus </strong>is a<strong> single monochromator system </strong>with an <strong>expandable wavelength range up to 1400 nm </strong>using an optional integrating sphere, making it adaptable for various needs.</li><li><strong>The UV-2700i Plus </strong>is a <strong>double monochromator system capable of 8-Abs measurements</strong>, ideal for low transmittance samples.</li></ul><p>Both models come equipped with the intuitive <strong>Shimadzu LabSolutions UV-Vis software</strong>, ensuring data integrity and ease of use. Additionally, these spectrophotometers can be <strong>scheduled to shut down or enter sleep mode </strong>to save power and lamp life, and can <strong>automatically wake up at a specified time</strong>, enhancing efficiency. Elevate your analysis with these versatile and efficient spectrophotometers.</p><h3><strong>Features</strong></h3><h3><strong>Perfect for a Wide Variety of Applications</strong></h3><p>The functionality of the <strong>UV-2600i Plus /2700i Plus</strong> can be freely expanded to suit the measurement objective. By accommodating a wealth of accessories, the system can address any user’s applications and a variety of situations. Thanks to intuitive operations, anyone can easily obtain the data required.</p><p><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Shimadzu_UV_2600i_Plus_UV_2700i_Plus_UV_VIS_NIR_Spectrophotometer_e5efa72f19.jpg" alt="Shimadzu UV-2600i Plus, UV-2700i Plus UV-VIS-NIR Spectrophotometer.jpg" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Shimadzu_UV_2600i_Plus_UV_2700i_Plus_UV_VIS_NIR_Spectrophotometer_e5efa72f19.jpg 245w," sizes="100vw" width="1040" height="561"></p><h5><strong>Single monochromator UV-2600i Plus</strong></h5><p><strong>A key feature</strong> of the UV-2600i Plus equipped with a single monochromator is its<strong> measurement wavelength range</strong>. By using the optional ISR-2600Plus Integrating Sphere attachment, the measurement wavelength range can be extended from<strong> 220 nm to 1400 nm</strong>, significantly expanding its applications.</p><p><strong>Integrating Sphere Enables Measurements to 1400 nm</strong></p><p>The<strong> UV-2600i Plus</strong> is equipped with <strong>Shimadzu's proprietary LO-RAY-LIGH™ grade diffraction grating</strong>, which achieves high efficiency and low stray light levels. By installing the ISR-2600Plus two-detector integrating sphere, the <strong>300 nm to 1100 nm</strong> wavelength range of conventional models can be extended to <strong>1400 nm</strong>. In addition, the UV-2600i achieves a significant noise reduction, and can accommodate measurements of solar cell anti-reflective films and polycrystalline silicon wafers.</p><p><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Shimadzu_UV_2600i_Plus_UV_2700i_Plus_UV_VIS_NIR_Spectrophotometer_11_40f2d1e598.jpg" alt="Shimadzu UV-2600i Plus, UV-2700i Plus UV-VIS-NIR Spectrophotometer" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Shimadzu_UV_2600i_Plus_UV_2700i_Plus_UV_VIS_NIR_Spectrophotometer_11_40f2d1e598.jpg 245w," sizes="100vw" width="365" height="228"><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Shimadzu_UV_2600i_Plus_UV_2700i_Plus_UV_VIS_NIR_Spectrophotometer_12_b71fa50d8f.jpg" alt="Shimadzu UV-2600i Plus, UV-2700i Plus UV-VIS-NIR Spectrophotometer" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Shimadzu_UV_2600i_Plus_UV_2700i_Plus_UV_VIS_NIR_Spectrophotometer_12_b71fa50d8f.jpg 245w," sizes="100vw" width="1052" height="433"><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Shimadzu_UV_2600i_Plus_UV_2700i_Plus_UV_VIS_NIR_Spectrophotometer_13_6adf0a1565.jpg" alt="Shimadzu UV-2600i Plus, UV-2700i Plus UV-VIS-NIR Spectrophotometer" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Shimadzu_UV_2600i_Plus_UV_2700i_Plus_UV_VIS_NIR_Spectrophotometer_13_6adf0a1565.jpg 245w," sizes="100vw" width="1052" height="466"></p><h4><strong>Measures Slight Differences in Absorbance</strong></h4><p>Equipped with a double monochromator that achieves ultra-low stray light levels, the <strong>UV-2700i Plus</strong> is optimal for measuring low transmittance samples, such as polarization films used for LCD panels. The UV-2700i Plus is capable of <strong>8 Abs measurements</strong>, and can make accurate transmittance measurements to 1 part in 100 million, accommodating a variety of sample measurements.</p><p><strong>Achieves Ultra-Low Stray Light, Enabling 8-Abs Measurements</strong></p><p>In the case of a device equipped with a general double monochromator, the absorbance that can be covered is about<strong> </strong>5 to 6, but the UV-2700i Plus offers a range to 8 Abs, with a transmittance value of <strong>0.000001 %</strong> (1 part in 100 million). This system achieves high-level absorbance measurements with incomparable precision. In addition to measuring even high-concentration samples as is, eliminating the need to dilute samples, the system can be applied to evaluating the transmission characteristics of polarization films. Wavelengths in the<strong> 400 nm to 650 nm range</strong> can be measured to 8 Abs.</p><p><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Shimadzu_UV_2600i_Plus_UV_2700i_Plus_UV_VIS_NIR_Spectrophotometer_16_a08f314ee7.jpg" alt="Shimadzu UV-2600i Plus, UV-2700i Plus UV-VIS-NIR Spectrophotometer" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Shimadzu_UV_2600i_Plus_UV_2700i_Plus_UV_VIS_NIR_Spectrophotometer_16_a08f314ee7.jpg 164w," sizes="100vw" width="511" height="485"><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Shimadzu_UV_2600i_Plus_UV_2700i_Plus_UV_VIS_NIR_Spectrophotometer_14_0d004ee208.jpg" alt="Shimadzu UV-2600i Plus, UV-2700i Plus UV-VIS-NIR Spectrophotometer" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Shimadzu_UV_2600i_Plus_UV_2700i_Plus_UV_VIS_NIR_Spectrophotometer_14_0d004ee208.jpg 245w," sizes="100vw" width="1052" height="466"></p><p><strong>Sample Polarization Film Measurement</strong></p><p>With the rotating film holder (image below), two film samples can be set on the same optical axis. In this example, the polarization film is rotated in the plane, and the transmittance is measured when the film transmits and blocks light.</p><p><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Shimadzu_UV_2600i_Plus_UV_2700i_Plus_UV_VIS_NIR_Spectrophotometer_1_5ff393836a.jpg" alt="Shimadzu UV-2600i Plus, UV-2700i Plus UV-VIS-NIR Spectrophotometer" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Shimadzu_UV_2600i_Plus_UV_2700i_Plus_UV_VIS_NIR_Spectrophotometer_1_5ff393836a.jpg 163w," sizes="100vw" width="397" height="381"><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Shimadzu_UV_2600i_Plus_UV_2700i_Plus_UV_VIS_NIR_Spectrophotometer_2_f293cd4e0e.jpg" alt="Shimadzu UV-2600i Plus, UV-2700i Plus UV-VIS-NIR Spectrophotometer" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Shimadzu_UV_2600i_Plus_UV_2700i_Plus_UV_VIS_NIR_Spectrophotometer_2_f293cd4e0e.jpg 184w," sizes="100vw" width="450" height="381"></p><h4><strong>Enables Compliance with ER/ES Regulations and Stronger Data Management</strong></h4><div><div><p><strong>Compatible with Validation from PC Software</strong></p><p>Validation can be implemented with PC software using UV validation software. In addition to simplifying daily inspections, this makes instrument performance checks and records management easier, enabling more secure regulatory compliance.</p><p><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Shimadzu_UV_1900i_Plus_UV_VIS_spectrophotometer_18_1aa29e9a5d.jpg" alt="Shimadzu UV-2600i Plus, UV-2700i Plus UV-VIS-NIR Spectrophotometer" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Shimadzu_UV_1900i_Plus_UV_VIS_spectrophotometer_18_1aa29e9a5d.jpg 232w," sizes="100vw" width="450" height="302"></p><ul><li>Inspection results can not only be printed but also saved to a file, so the results can be called up later for confirmation.</li><li>The inspection parameters can also be saved to separate files for periodic and routine inspections and then called up for use.</li></ul><p><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Shimadzu_UV_1900i_Plus_UV_VIS_spectrophotometer_19_7395087cba.jpg" alt="Shimadzu UV-2600i Plus, UV-2700i Plus UV-VIS-NIR Spectrophotometer" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Shimadzu_UV_1900i_Plus_UV_VIS_spectrophotometer_19_7395087cba.jpg 232w," sizes="100vw" width="450" height="302"></p><ul><li>The user can select confirmation of instrument performance indicators as per JIS K 0115 General rules for molecular absorptiometric analysis, as well as the general test methods in the Japanese Pharmacopeia. (Order inspection jigs and reagents separately.)</li></ul><p><i>Note: Optional validation software is required to support the US Pharmacopeia and European Pharmacopeia.</i></p><p><strong>Support for FDA 21 CFR Part 11, PIC/S GMP Guidelines and Other Regulations and Guidelines</strong></p><p>Ensuring the integrity of data (database management), including the user management, user authority management, and data audit trails required for compliance with <strong>FDA 21 CFR Part 11, PIC/S GMP guidelines</strong>, and <strong>other ER/ES regulations</strong> is possible.</p><p><strong>Option Software Assists with Regulation-Compliant Validation</strong></p><p>UV validation software assists with performing the measurements and calculations required for validation. The software is included standard with UV-2600i/2700i models. In addition to routine inspections, it can also be used to perform instrument validation that is compliant with Japanese, US, and European pharmacopoeias.</p><p><strong>Assist Function</strong></p><p>The instrument assists the user to ensure that measurements are performed using the correct procedure.*1</p><p><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Shimadzu_UV_1900i_Plus_UV_VIS_spectrophotometer_10_a30e63a8a4.jpg" alt="Shimadzu UV-2600i Plus, UV-2700i Plus UV-VIS-NIR Spectrophotometer" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Shimadzu_UV_1900i_Plus_UV_VIS_spectrophotometer_10_a30e63a8a4.jpg 245w," sizes="100vw" width="1201" height="212"></p><p>*1 This function can be enabled/disabled.</p><p><strong>Shutdown/Wakeup Functions</strong></p><section><div><p>The instrument can be shut down, and put into sleep mode. Putting the instrument into sleep mode limits power consumption and helps preserve the lamp. After a long period of measurements, the instrument and software can automatically be shut down. After shutdown, the instrument can also be set to wake up automatically at a specified time. With this function, analysis can start the instant the user arrives at the laboratory.</p><p><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Shimadzu_UV_2600i_Plus_UV_2700i_Plus_UV_VIS_NIR_Spectrophotometer_15_45b844fcc9.jpg" alt="Shimadzu UV-2600i Plus, UV-2700i Plus UV-VIS-NIR Spectrophotometer" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Shimadzu_UV_2600i_Plus_UV_2700i_Plus_UV_VIS_NIR_Spectrophotometer_15_45b844fcc9.jpg 245w," sizes="100vw" width="781" height="258"></p></div></section><h3><strong>Applications</strong></h3><h4><strong>Electricity, Electronics, and Optics</strong></h4><p><strong>Band Gap Measurements for Compound Semiconductors</strong></p><p><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Shimadzu_UV_2600i_Plus_UV_2700i_Plus_UV_VIS_NIR_Spectrophotometer_3_03d8793fe0.jpg" alt="Shimadzu UV-2600i Plus, UV-2700i Plus UV-VIS-NIR Spectrophotometer: The diffuse reflection spectra for two types of compound semiconductors (red line: Culn0.5Ga0.5Se2, blue line: CulnSe2) used as solar cell materials were measured using the ISR-2600Plus integrating sphere. It is evident that the absorption edge (position where the reflectance drops) differs depending on the sample. This difference signifies a difference in the band gap* for these samples. (The samples were provided by Wada Laboratory, Faculty of Science and Technology, Ryukoku University.) The band gaps for the samples were calculated utilizing the Tauc method. The results obtained were 1.27 eV for Culn0.5Ga0.5Se2 (red line) and 0.99 eV for CulnSe2 (blue line).  *The term band gap refers to the energy difference between the top of the valence band, which is full of electrons, and the bottom of the conduction band, which does not contain electrons." srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Shimadzu_UV_2600i_Plus_UV_2700i_Plus_UV_VIS_NIR_Spectrophotometer_3_03d8793fe0.jpg 222w," sizes="100vw" width="519" height="364"></p><h4><strong>Chemicals</strong></h4><p><strong>Thickness Measurements of Cling Films</strong></p><p><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Shimadzu_UV_2600i_Plus_UV_2700i_Plus_UV_VIS_NIR_Spectrophotometer_4_a5e83ed3ad.jpg" alt="Shimadzu UV-2600i Plus, UV-2700i Plus UV-VIS-NIR Spectrophotometer: Undulating interference waveforms sometimes occur if light is passed through a film. The film thickness of a sample can be determined by using these interference waveforms. The figure shows transmittance data for a cling film. A clear interference waveform is produced. Utilizing optional film thickness measurement software, the film thickness is calculated as 10.4 μm. (Caution) The sample's refractive index must be entered for the film thickness calculation." srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Shimadzu_UV_2600i_Plus_UV_2700i_Plus_UV_VIS_NIR_Spectrophotometer_4_a5e83ed3ad.jpg 222w," sizes="100vw" width="1038" height="728"></p><h4><strong>Medicines</strong></h4><p><strong>Evaluating Thermal Stability (T<sub>m</sub>) Analysis of Oligonucleotide Therapeutics</strong></p><p><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Shimadzu_UV_2600i_Plus_UV_2700i_Plus_UV_VIS_NIR_Spectrophotometer_5_c80d107f38.jpg" alt="Shimadzu UV-2600i Plus, UV-2700i Plus UV-VIS-NIR Spectrophotometer: Oligonucleotide therapeutics samples (9 to 60 M) were analyzed using TMSPC™-8i and 1 mm optical path length cells. Since UV-2600i Plus /2700i Plus can measure over a wide dynamic range, it is possible to perform a thermal stability analysis of nucleic acid drugs by obtaining the Tm value from the melting curve." srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Shimadzu_UV_2600i_Plus_UV_2700i_Plus_UV_VIS_NIR_Spectrophotometer_5_c80d107f38.jpg 222w," sizes="100vw" width="1038" height="728"></p><h4><strong>Construction</strong></h4><p><strong>Window Glass Transmission Measurements</strong></p><p><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Shimadzu_UV_2600i_Plus_UV_2700i_Plus_UV_VIS_NIR_Spectrophotometer_6_41420fd6ba.jpg" alt="Shimadzu UV-2600i Plus, UV-2700i Plus UV-VIS-NIR Spectrophotometer: Two types of window glass were measured utilizing the ISR-2600Plus integrating sphere. The sample shown by the red line is highly transparent to near-infrared light at 800 nm or more. The sample shown by the blue line, however, is apparently not very transparent to near-infrared light." srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Shimadzu_UV_2600i_Plus_UV_2700i_Plus_UV_VIS_NIR_Spectrophotometer_6_41420fd6ba.jpg 222w," sizes="100vw" width="519" height="364"></p><h4><strong>Cosmetics</strong></h4><p><strong>Measurement of the Ultra Violet Protection Factor Assigned to Ultraviolet Protection Clothes</strong></p><p><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Shimadzu_UV_2600i_Plus_UV_2700i_Plus_UV_VIS_NIR_Spectrophotometer_7_528f748880.jpg" alt="Shimadzu UV-2600i Plus, UV-2700i Plus UV-VIS-NIR Spectrophotometer: The UV protection provided by clothes and an umbrella were analyzed by an ISR-2600Plus integrating sphere accessory. The transmittance spectrum of the umbrella (green) shows that very little UV radiation transmits through the umbrella. In regards to the clothing, the black areas block more UV radiation than do the white areas." srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Shimadzu_UV_2600i_Plus_UV_2700i_Plus_UV_VIS_NIR_Spectrophotometer_7_528f748880.jpg 159w," sizes="100vw" width="474" height="465"></p><h4><strong>Textiles</strong></h4><p><strong>Total Transmittance Spectrum of CNF</strong></p><p><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Shimadzu_UV_2600i_Plus_UV_2700i_Plus_UV_VIS_NIR_Spectrophotometer_8_adb8c09844.jpg" alt="Shimadzu UV-2600i Plus, UV-2700i Plus UV-VIS-NIR Spectrophotometer: An ISR-2600Plus integrating sphere was used to measure the total transmittance spectrum of cellulose nanofiber (CNF). Depending on the raw materials used, spectra can vary, transparency can vary, and spectral tendencies in the ultraviolet region can vary." srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Shimadzu_UV_2600i_Plus_UV_2700i_Plus_UV_VIS_NIR_Spectrophotometer_8_adb8c09844.jpg 222w," sizes="100vw" width="519" height="364"></p><h4><strong>Life Sciences</strong></h4><p><strong>DNA and Protein Measurements</strong></p><p><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Shimadzu_UV_2600i_Plus_UV_2700i_Plus_UV_VIS_NIR_Spectrophotometer_9_40a6f16a7b.jpg" alt="Shimadzu UV-2600i Plus, UV-2700i Plus UV-VIS-NIR Spectrophotometer: The red and blue lines are the absorption spectra for dsDNA and BSA (bovine serum albumin), respectively. The concentration values are 45 ng/μL for dsDNA and 2.2 mg/mL for BSA." srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Shimadzu_UV_2600i_Plus_UV_2700i_Plus_UV_VIS_NIR_Spectrophotometer_9_40a6f16a7b.jpg 222w," sizes="100vw" width="519" height="364"></p><h4><strong>Foods</strong></h4><p><strong>Vitamin Measurements</strong></p><p><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Shimadzu_UV_2600i_Plus_UV_2700i_Plus_UV_VIS_NIR_Spectrophotometer_10_c7f5e10b1e.jpg" alt="Shimadzu UV-2600i Plus, UV-2700i Plus UV-VIS-NIR Spectrophotometer: This shows the absorption spectra for riboflavin (vitamin B2). The sample concentrations are, in order from the highest absorbance, 0.08, 0.04, 0.02, and 0.01 mg/mL." srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Shimadzu_UV_2600i_Plus_UV_2700i_Plus_UV_VIS_NIR_Spectrophotometer_10_c7f5e10b1e.jpg 222w," sizes="100vw" width="1038" height="728"></p></div></div></section></section></section>

Products from category UV-VIS spectrophotometry focused on UV–VIS spectrophotometry from Shimadzu - page 1

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