EPA Method 551 - Disinfection By-Products Back Catalog number: 32852 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 91965 MA - VPH Matrix Spiking Sub Price on request 93997 Chrysene, 100µg/ml in Acetone, 1ml Price on request 0196.4-1G Diethyldisulfide, neat, Solvent-neat, Unit 1g, # of units-1, Cas.no. 110-81-6 Price on request