MT/T 278-1994 《Determination method of harmful gas ammonia in mine air (detection tube method)》 Related products

"MT/T 278-1994 Method for the Determination of Harmful Gas Ammonia in Mine Air (Detection Tube Method) " stipulates a method for the determination of ammonia concentration in mine air using a specific length ammonia detection tube. This standard applies to the determination of ammonia concentration in mine air, expressed in ppm (V/V). The detection principle is to indicate the chemical substances in the powder through the adsorption of the carrier. When the ammonia-containing mine air passes through, the Color of the indicator powder will change, and the Ammonia concentration will be determined according to the length of the Color change.