EPA Method 8240A - Purgeable Surr Std Back Catalog number: 20002 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 680343 Pyrazoxyfen, 100 µg/ml, Acetonitrile, 1ml Price on request D453000-500MG rac 3,4-Dihydroxymandelic Acid, 500mg Price on request 72780 Chlorfenapyr, 1000µg/ml in MeOH, 1ml Price on request