Method 200.8/1638/1640 Internal Standard Back Catalog number: 53145 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 683717 Acequinocyl-hydroxy, 100 µg/ml, Ethyl acetate, 1 Price on request 73433 Terephthalic acid Price on request 2124.12-100-IOX10 Arochlor 1016 , 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-10, Cas.no. 12674-11-2 Price on request