Pesticide/Biphenyl Standard Back Catalog number: 94216 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 92368 MA - VPH Surrogate Spike Price on request 55009 WS Chlorate & Chlorite Price on request C11310200 Chlorhexidine dihydrochloride, certified, 0.25g Price on request