EPA Method 6020/6020A - Mix B Back Catalog number: 52331 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 2518.7-K-ME Theophylline,1000 µg/mL,MeOH,1mL, Price on request 71236 Isobutyl acetate Price on request 675500 Bentazone, 1000 µg/ml, Methanol, 1ml Price on request