詳細說明 - Spectrophotometer UV7 Wavelength Range (nm) 190 nm - 1,100 nm Photometric accuracy (K2Cr2O7) ±0.005 A Wavelength accuracy ±0.5 nm Resolution (Toluene in hexane) >1.9 Stray light (KCl, 198nm) >2.3 Compatibility with LabX Software Yes Options CertiRef CuvetteChanger FillPalMini Fi...
The figure on the right is a calibration curve for acetic acid, created with absorbance at 200 nm. The correlation coefficient is 0.9997 and correct measured values are obtained even in the vicinity of 2 Abs. Linearity will be lost in the high absorbance region due to the stray light. ...
asoutlinedbyISO9000,GLP,GMPandNAMAS,haveassumedincreasingimportanceandasaconsequence,inthephar-maceuticalindustry,therecom-mendationsofpharmacopeiashavealsobecomemoreinfluen-tial.VerificationofthecontinuedproperperformanceofUV-visiblespectrophotometersisanimpor-tantelementofthesequalityrequirements.DefinitionTheterms...
Under these conditions, the overall deviation of the calculated calibration curve from the measured data points is minimized. Method of Maximum Likelihood The Method of Maximum Likelihood is a two-stage curve fit that makes use of the statistical variances that the diode-array spectrophotometer ...
Specifications - Spectrophotometer UV7 Wavelength Range (nm) 190 nm - 1,100 nm Photometric accuracy (K2Cr2O7) ±0.005 A Wavelength accuracy ±0.5 nm Resolution (Toluene in hexane) >1.9 Stray light (KCl, 198nm) >2.3 Compatibility with LabX Software Yes Options CertiRef CuvetteChanger FillP...
Specifications - Spectrophotometer UV7 Wavelength Range (nm) 190 nm - 1,100 nm Photometric accuracy (K2Cr2O7) ±0.005 A Wavelength accuracy ±0.5 nm Resolution (Toluene in hexane) >1.9 Stray light (KCl, 198nm) >2.3 Compatibility with LabX Software Yes Options CertiRef CuvetteChanger FillPal...
Spectrophotometer UV7 UV/Vis According to Pharmacopeia.Ideal for regulated environments; spectrometer calibration performed according to European and US pharmacopeia. Supports 21 CFR Part 11 and data integrity compliance with LabX Software. Offers advanced automation capabilities. Excellent Performance FastTra...
A UV-visible spectrophotometer (UV 1900 Shimadzu, Kyoto, Japan) equipped with 1-cm quartz cells was used to record the spectrum of ascorbic acid. pH values of the test solutions were measured using a Hanna benchtop pH meter (HI5222, Woonsocket, RI, USA). A Milli-Q Direct 8 Ultrapure Wat...
Measurements were performed using a Macbeth CE 3000 spectrophotometer (Macbeth, London, UK) under D65 illumination, 10 degrees standard observer with UV included and specular component excluded. The lightness (L), redness (a*), and yellowness (b*) values of the emulsions were measured in order...
This method is frequently used for semiconductors such as TiO2 with indirect transition. FT-IR/DRS spectra were measured by using reflection technique in spectrophotometer FT/IR 4200 of Jasco Company (Tokyo, Japan). Spectra were measured with resolution of 4 cm−1 and a scanning speed of 1 ...