Interference Standard 1 Back Catalog number: 52039 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended BDE-49 2,2',4,5'-Tetrabromodiphenyl ether, 1.2ml x 50ug/ml, nonane Price on request 52074 Drinking Water Standards Kit Price on request 97851 Chlorohydrocarbon Standard Price on request