EPA Method 8121 Internal Standard Back Catalog number: 81203 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 676556 D7-Propamocarb, 100 µg/ml, Acetone, 1ml Price on request 673607 tau-Fluvalinate, 10.0 µg/ml, Ethyl acetate, 10ml Price on request 52318 ICP MS Tuning Solution #4 Price on request