EPA Method 8250/8250A Cal Check Cmpds Acids Back Catalog number: 82508 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 680443 beta-HCH, 100 µg/ml, Methanol, 1ml Price on request BB-9 2,5-Dibromobiphenyl, 1.2ml x 50ug/ml, nonane Price on request 79520 Diphenylamine Price on request