pH Measurement

	NMIM has developed pH buffer for the calibration of commercial pH meter at pH 4.01 and pH 6.86. The reference values are established by using glass electrode (High Accurate pH Meter System, PHL 90). Series of standard solutions ranging from pH 1.68 to pH 14.01 are under development and will be available for the calibration of various types of pH meters in 2016. With the list of pH standard solutions, NMIM is able to provide traceability for the calibration of pH meters.
	pH Buffer solutions available: 1.pH 4.01 at 250C 2.pH 6.86 at 250C


pH Buffer produced in Chemistry Section	Traceability for pH measurement

NMIM Info

NMIM plays an important role in disseminating the traceability of measurement to the whole country based on the International System of Units. Just like other world standard laboratories, NMIM has great responsibility in ensuring the national metrology infrastructures meet and comply with the global measurement standards.