EPA Method 8260B - Purgeable Internal Std Back Catalog number: 22013 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 3909.20-1G Amaranth, Redx No 2 (E 123), neat, Solvent-neat, Unit 1g, # of units-1, Cas.no. 915-67-3 Price on request 678241 4-Epichlortetracycline hydrochloride, 5mg Price on request 1582.11-10MG Proguanil hydrochloride, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 637-32-1 Price on request