CLP Pesticide Lab Control Standard Back Catalog number: 20061 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 C11020500 Carbophenothion-methyl, 10mg Price on request 675809 Ethephon, 250mg Price on request