EPA 8240B Calibration Mix 6 Back Catalog number: 82429 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 677996 Fenthion-sulfone, 100 µg/ml, Toluene, 1ml Price on request 681220 D3-Glufosinate hydrochloride, 100 µg/ml, Water, Price on request D292365 Desmethylnarcotine, 1mg Price on request