Perchlorate Level 2 Back Catalog number: 59340 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended C15930000 Pendimethalin, 100mg Price on request 3944.1-1ML Dichlorodifluoromethane, neat, Solvent-neat, Unit 1mL, # of units-1, Cas.no. 75-71-8 Price on request C10861290 1,2-Butanediol, certified, 0.25g Price on request