EPA Method 8060 QC Check Solution Back Catalog number: 80612 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 3391.9-100 Endosulfan , 100µg/mL, Solvent-c.hexane or ac.nitrile, Unit 1mL, # of units-1, Cas.no. 115-29-7 Price on request 676746 Sodium perchlorate monohydrate, 250mg Price on request 1822.8-100MG cis-1,2-Cyclohexanedicarboxylic acid, neat, Solvent-neat, Unit 100mg, # of units-1, Cas.no. 610-09-3 Price on request