EPA Method 8070 - Nitrosamines Back Catalog number: 19222 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended DF-2347-S 2,3,4,7-Tetrachlorodibenzofuran, 1.2ml x 50ug/ml, nonane Price on request 33201 Set of 2 Ampules 524.2 Price on request 92815 Volatile Mix A1, 200µg/ml in MeOH, 1ml Price on request