EPA Method 525 Internals & Surrogates Back Catalog number: 95227 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 9698.29-10MG 5 alpha(H)-Cholestan-3ß-ol acetate, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. Price on request 79046 Aldrin Price on request 13430-0205-100AN5 n-Undecanaldehyde-DNPH, 100µg/ml in Acetonitrile, 5ml Price on request