High Purity Organic Substance


Quantitative Nuclear Magnetic Resonance (qNMR) has been developed for the determination of high purity organic compound. The qNMR is a fast and non-destructive method that has the advantage in determining purity by principal component analysis.



NMR Spectroscopy

Blood Alcohol Content

Blood alcohol content (BAC) is commonly used as a metric of alcohol intoxication for legal or medical purposes. It can be measured by using a breath alcohol analyser device from a breath sample.  



Evidential breath analyzer

National Metrology Institute Malaysia (NMIM) is preparing the ethanol standard solution in the concentration range of 40 mg/ 100ml to 80 mg/100 ml as standard for calibrating and verifying breath alcohol analyser. The standard solution is prepared gravimetrically and confirmed the concentration by GC-FID using non-IDMS exact matching method. The performance of this method has been demonstrated in international comparison and the result was in good agreement with the assigned reference value. 




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
phh3 phh5

pH Buffer produced in Chemistry Section

Traceability for pH measurement

Heavy Metal

Heavy metal analytical measurement 

This section is responsible for realization of primary standard as CRMs by developing and maintaining core expertise in gravimetric analysis and isotope dilution inductively coupled plasma mass spectrometry (IDMS).

hm1 hm2

Traceability in inorganic analysis (e.g: Cadmium (Cd) in Rice

Inductively Coupled Plasma Mass Spectrometry (ICPMS)


Heavy metal reference material

This group is responsible for supplying metal standard solutions and matrix reference material that are used for method validation in the areas of industrial materials, environment and foods. Many studies have been conducted toward the advancement of existing analytical methods and the development of new methods in order to certify such reference materials. 

hm3  hm4  hm5  hm6 
 Food Safety  Environment Monitoring  Pharmaceuticals  Toys