EPA 1620 Standard 1 Back Catalog number: 52139 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended CLM-351-1.2 Hexachlorobenzene (13C6, 99%), 100µg/ml in Nonane, 1,2ml Price on request 83506 Dicamba methyl derivative Price on request 50011 ICP Mix Price on request