Arsenic (As) Back Catalog number: 57333 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 59344 Perchlorate (ClO4-), 100µg/mL in Water, 100ml Price on request 3990.8-K-CY n-Propylcyclopentane, 1000µg/mL, Solvent-cyclohexane, Unit 1mL, # of units-1, Cas.no. 2040-96-2 Price on request 3998.9-K-CY n-Butylcyclopentane, 1000µg/mL, Solvent-cyclohexane, Unit 1mL, # of units-1, Cas.no. 2040-95-1 Price on request