EPA Method 8240A Calibration Check Compounds Back Catalog number: 82412 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 71200 g-Butyrolactone Price on request DEC-604 Dechlorane 604, 1.2ml x 50ug/ml, toluene Price on request 54108 Bromate (BrO3-), 1000µg/ml in Water, 100ml Price on request