Hexavalent Chromium (Cr 6+) Back Catalog number: 59941 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 1969.12-50-IO 2,3',4,4',6-Pentabromodiphenyl ether, 50µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 189084-66-0 Price on request A16560000AL-100 Prothiophos, 100µg/mL in Acetonitrile, 1ml Price on request 18000-0070-100AN5 L-Ascorbic acid sodium, 100µg/ml in Acetonitrile, Price on request