500 ml of Buffer Solution pH 7.413.
Radiometer pH buffer solution supplied with a COFRAC Verification Certificate and Certificate of Conformity and Traceability drawn up according to ISO31.
- Total Control of the traceability chain and calculated uncertainties
- Direct traceability to primary standards and the reference method
- The competence and integrity of a laboratory internationally recognized to be accredited for the measurement of pH and conductivity reference materials