EPA Method 622.1 Analytes Back Catalog number: 40019 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 677972 Chlorpyrifos-methyl, 100 µg/ml, Toluene, 1ml Price on request 8951.21-100-ME 3-Chloro-1,2-propandiol-1-monostearate, 100µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. Price on request 0682.28-200-IO (24R)-24-Methylcholesta-3,5-diene and (24R)-Ethylcholesta-3,5-diene, 200µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 102491-95-2 / 4970-37-0 Price on request