NATIONAL OPACITY CERTIFIED REFERENCE MATERIAL (NOCRM)
Diesel Smoke Meter is a measuring device that measures the quantity of output produced by automotive vehicles, diesel-powered engines. The measured parameter is opacity, %. According to Act 127, the Environmental Quality Act 1974, Regulations Environmental Quality (Control of Emission from Diesel Engines) Regulations 2000, diesel smoke meters should be calibrated every year and National Metrology Institute of Malaysia (NMIM) is the appointed competent authority for the calibration process.
NMIM is capable of providing measurement for range 20 % to 80 % opacity.