The US EPA method 501 is an analytical method that utilizes a purge & trap device for sample prep and a gas chromatograph equipped with a packed column to perform the seperation of the volatile halogenated components found in a 5 mL sample of drinkingwater. To detect the GC eluant, a Hall detector is used.

TRIHALOMETHANES（三卤甲烷混标） 
4种认证的分析物： 
Bromodichloromethane 溴二氯甲烷 
Chloroform 氯仿 
Bromoform 三溴甲烷 
Dibromochloromethane 二溴 


Catalog#: THM-XH：1.2 mL @ 2000 µg/ml in METH-P&T 

Catalog#: THM-XH-4：1.2 mL X 4 PACK 


Catalog#: THM-X：1.2 mL @ 200 µg/ml in METH-P&T 

Catalog#: THM-X-4：1.2 ML X 4 PACK