EPA Method 8021B Internal Standard Back Catalog number: 19394 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 60015 Volatile Surrogate Standard Price on request 93033 AROM >C10, 10µg/ml in n-Pentane, 1ml Price on request 2028.14-100-DC 4,4'-DDT, 100µg/mL, Solvent-dichloromethane, Unit 1mL, # of units-1, Cas.no. 50-29-3 Price on request