EPA Method 8315 Calibration Mix #1 Back Catalog number: 83509 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 71280 Piperonyl butoxide, 1000µg/ml in MeOH, 1ml Price on request C15712100 4-tert-Octylphenol, certified, 0.25g Price on request 674815 Prothoate, 10 µg/ml, Ethyl acetate, 10ml Price on request