Quantification of embedded H2O in soft contact lenses by NIR spectroscopy

Applications |  | MetrohmInstrumentation
NIR Spectroscopy
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Materials Testing
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Near-Infrared Spectroscopy Application Note NIR–21Monitoring the purity ofrecovered solvents by NIRSThe purity of a solvent (dichloromethane/methylene chloride) is monitoredby NIR spectroscopy along with two of the major impurities (methanol andwater). Method descriptionIntroductionThe solvents that are used in manufacturing processesare often not...
Key words
nir, nirimpurities, impuritiesfischer, fischernirs, nirsxds, xdskarl, karldistillation, distillationsamples, samplessolvents, solventsmethanol, methanolspectroscopy, spectroscopyoptic, opticbands, bandsmodel, modelrecovered
NIR Application Note NIR-26Dye, diethylene glycol, water,and surfactant content in inkThis Application Note shows that Vis-NIR spectroscopy can be used to quantifyfour important parameters – dye, diethylene glycol (DEG), surfactant and watercontent – of the ink industry. The determination of...
Key words
sev, sevmath, mathpress, presscontent, contentregression, regressiondye, dyepretreatment, pretreatmentsurfactant, surfactantwavelength, wavelengthsec, secmodel, modeldeg, degink, inkvalue, valuenir
NIR Application Note NIR–055Determination of water contentin moisturizing skin creams usingnear-infrared spectroscopywater contentNear-infrared spectroscopy (NIRS) was used as an analysis method for qualitycontrol of skin creams. A model for the quantification of the water content wasdeveloped based on Karl Fischer...
Key words
creams, creamsnirs, nirsmoisturizing, moisturizingcontent, contentmethod, methodspectroscopy, spectroscopyregression, regressionslurry, slurrywater, waterfischer, fischerkarl, karlskin, skincup, cupwere, werenir
NIR Application Note NIR-062Determination of sun protectionfactor in creams using visiblenear-infrared spectroscopyThis Application Note shows that visible near-infrared spectroscopy (VisNIRS) can determine the sun protection factor (SPF) of sunscreen products.Thanks to measurement durations of less than 30 seconds, NIRspectroscopy is...
Key words
spf, spfsunburn, sunburnradiation, radiationcreams, creamsspectroscopy, spectroscopypls, plscountry, countrydetermination, determinationcostumer, costumeraxis, axismetrohm, metrohmtransflection, transflectionprotection, protectionover, overcorrelation