EPA Method 551 - Disinfection By-Products Back Catalog number: 32852 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 679449 Heptachlor-exo-epoxide, 100 µg/ml, Methanol, 1ml Price on request 12058.11-5MG (+/-)-Methocarbamol-d3 (methoxy-d3),neat,neat,5mg Price on request 672969 Polymyxin B sulfate, 100mg Price on request