Internal Standard Back Catalog number: 95665 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 93997 Chrysene, 100µg/ml in Acetone, 1ml Price on request 2186.6-100MG Perfluorohexane sulfonylfluoride, neat, Solvent-neat, Unit 100mg, # of units-1, Cas.no. 423-50-7 Price on request 55062 WP & DMRQA Total Residual Chlorine Price on request