EPA Method 1666 Standard #2 Back Catalog number: 82450 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 674041 Biphenyl, 1000mg Price on request 73601 Tetracycline, 1000μg/ml in MeOH, 1ml Price on request 50258 BOD Calibraton Standard Price on request