Interference Standard Mix 2 Back Catalog number: 53040 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 55065 WP & DMRQA Total Cyanide in Water Price on request 20003 EPA Method 8240A/1666 - Purgeable Internal Std Price on request 0245.26-200-T 2.3-Peri-naphthylene-pyrene, 200µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 188-89-6 Price on request