EPA Method 504 Back Catalog number: 81806 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 70153 Diethyl ether Price on request 2661.12-10-IOX5 Arochlor 1232, 10µg/mL, Solvent-isooctane, Unit 1mL, # of units-5, Cas.no. 11141-16-5 Price on request 1891.12-1G 2,7-Naphthalenedicarboxylic acid, neat, Solvent-neat, Unit 1g, # of units-1, Cas.no. 2089-89-6 Price on request