EPA Method 8240A - Purgeable Surr Std Back Catalog number: 20002 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 79909 Acetochlor, 1000µg/ml in MeOH, 1ml Price on request N-12738-250MG Oxolinic acid, 250mg Price on request 57057 Lanthanum (La) Price on request