“RI Equivalent” Aqueous Urea Solutions
Users of refractometers for the testing of Diesel Exhaust Fluids require some specific calibration materials. Manufacturers need an extremely high accuracy CRM to comply with ISO 22241-2, whilst users in the field need longevity of product.
Bellingham + Stanley offers an existing fluid that has an equivalent refractive index to 32.5% Urea.
Manufactured in accordance EN ISO/IEC 17025:2005, this CRM is supplied with a UKAS Certificate showing traceability to NIST and ICUMSA at 20°C and 589nm.
|Order Code||Type||Value (RI)||Vessel||Volume||Uncertainty
|90-421||BS-AUS||1.38290||Glass||1 x 5ml||±0.000034||12-months|
|90-521||BS-AUS||1.38290||Glass||5 x 5ml||±0.000034||12-months|
The reported expanded uncertainty of measurement is stated as the standard uncertainty of measurement in units of °Brix (equivalent to weight % sucrose in water) multiplied by the coverage factor k=2, which for a normal distribution corresponds to a coverage probability of approximately 95%. The standard uncertainty of measurement has been determined in accordance with publication EA-4/02.