EPA Method 552.2 - Surrogate Standard Back Catalog number: 30108 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 32941 Xylenes [Total Mixed Isomers] Price on request 71349 Propyl 4-hydroxybenzoate Price on request 678627 Acrolein-2,4-DNPH, 25mg Price on request