TOC Calibration Standard (C) Back Catalog number: 59144 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended N-12148-50MG Heptachlor epoxide (Isomer B), 50mg Price on request XA17875000AL Trimethoprim, 100μg/mL in Acetonitrile, 1ml Price on request 0622.27-K-IO alpha alpha alpha (20R)-Cholestane, 1000µg/mL in Isooctane, 1ml Price on request