EPA Method 552,552.1,552.2 Internal Std Back Catalog number: 30105 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 1887.20-K-IO Ethyltriphenyltin, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 5424-25-9 Price on request B447395-1MG Bis(4-hydroxyphenyl) Sulfone O-Beta-D-Glucuronide Sodium Salt, 1mg Price on request 686037 alpha,alpha-Dimethylphenethyl acetate, 1g Price on request