EPA Method 551.1 Surrogate Standard Back Catalog number: 31102 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 90565 2-Chloro-1,3-butadiene Price on request 93986 WS Disinfection By-Products - Cal Check 4 Price on request XA10960100AC Captan D6, 100µg/ml in Acetone, 1ml Price on request