EPA Method 551 - Disinfection By-Products Back Catalog number: 32852 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 674716 Amisulbrom, 100 µg/ml, Acetonitrile, 1ml Price on request 673378 Methomyl, 10.0 µg/ml, Acetonitrile, 10ml Price on request 678243 Tris(2,4-di-tert-butylphenyl) phosphite, 250mg Price on request