EPA Method 531.1 Individual Analytes Back Catalog number: 30041 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 9217.13-100MG 4-Chlorobenzophenone, neat, Solvent-neat, Unit 100mg, # of units-1, Cas.no. 134-85-0 Price on request 97027 Triethylamine Price on request 676642 D4-Ketoprofen, 100 µg/ml, Acetonitrile, 1ml Price on request