Spiking Standard Kit Back Catalog number: 52068 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 8943.11 Propachlor, 100µg/mL, Solvent-c.hexane or ac.nitrile, Unit 1mL, # of units-1, Cas.no. 1918-16-7 Price on request 675397 Chlorpyrifos, 100 µg/ml, Acetonitrile, 5ml Price on request 59337 pH 9.0 Standard @ 25°C Price on request