Calibration Standard Set Back Catalog number: 52042 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 9056.6-K-IP Tetrachlorocatechol , 1000µg/mL, Solvent-isopropanol, Unit 1mL, # of units-1, Cas.no. 1198-55-6 Price on request 682353 2-(2-Butoxyethoxy)ethanol, 1000mg Price on request 2125.12-K-IOX5 Arochlor 1221 , 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-5, Cas.no. 11104-28-2 Price on request