| Description | Potassium dichromate filter, liquid filter, certified |
| Use | Assessment of photometric accuracy (absorbance) in the Vis range (measuring wavelength 430 nm) with a spectral bandwidth of 2 nm or less |
| Material | 0.06% potassium dichromate dissolved in perchloric acid and sealed in Hellma precision cells made from quartz SUPRASIL® |
Fifth revision of European Pharmacopeia stipulates also checking the photometrical accuracy of the spectrophotometer at a wavelength in the visible region (430 nm) besides the checking in the UV region. The testing has to be carried out by means of a solution of 0.06% potassium dichromate dissolved in perchloric acid. The absorbance value of the filter is determined at a wavelength of 430 nm and is specified in the certificate. It should be noted that the measurement is carried out with the filter 667-UV14 (0.01 N perchloric acid) in the reference beam path. Measured values of the reference filter are separately displayed.
|
Wavelength (nm) |
Specific Absorption A 1 %1 cm |
Maximum Tolerance A 1 %1 cm |
| 430 | 15,9 | 15,7 to 16,1 |
| Contact Information | Site Information | Delivery & Returns | More Information | ISO 9001 : 2015 Registered Company |
|
UVISON Technologies Limited 6 Nepicar Park London Road, Wrotham Sevenoaks, Kent TN15 7AF United Kingdom Tel: +44 (0)1322 285850 Fax: +44 (0)1322 285851 Find Us: Google Maps | 
|
