EPA Method 8021B Internal Standard Back Catalog number: 19394 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended TCHLORD trans-Chlordane (g), 1.2mL x 100ug/mL, nonane Price on request 1681.30-100-IO 17ß(H)-Hop-21(22)-en-3-one, 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 17152-56-6 Price on request 70306 m-Xylene, 1000µg/ml in MeOH, 1ml Price on request