European Pharmacopoeia Reagent Coloration – Primary Solution Yellow

Measurements are derived from and traceable to the SI system of units through the use of balances calibrated against NPL’s

national standard for mass. The balances used in this process are calibrated on a regular basis with the calibration being

traceable to National Institute Standards and Technology (NIST) and other recognised national standards laboratories. This

certificate provides traceability of measurement to recognised national standards, and to units of measurement recognised at

National Institute Standards and Technology (NIST) and other recognised national standards laboratories

All temperature measurements are traceable to the International Temperature Scale 1990 and were made using

thermometers with calibrations traceable to the National Physical Laboratory (NPL), the National Institute of Standards and

Technology (NIST), or other recognised national standards laboratories

Where required Class A laboratory glassware is used.