EPA Method 525 Pesticide Standard Back Catalog number: 92933 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 50733 Chloride (Cl-) Price on request 679879 4,4'-Diaminodiphenyl sulfide, 100 µg/ml, Acetonit Price on request 0039.28-20-CB Dibenzo[2,3;10,11]peryleno[1,12-bcd]thiophene, 20µg/mL, Solvent-chlorobenzene, Unit 1mL, # of units-1, Cas.no. 196-23-6 Price on request