EPA Method 8240A Internal Standard Back Catalog number: 22003 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended T3260 3,4,5-Trifluoro-4'-(trans-4-propylcyclohexyl)biphenyl, >98%, 1g Price on request 673634 Metazachlor, 100 µg/ml, Ethyl acetate, 5ml Price on request 59811 Hexavalent Chromium (Cr +6) Price on request