PCB Congener Internal Standard Mix Back Catalog number: 94569 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended NG-S31-1G Sodium laurate, 1g Price on request DTPP Triphenyl phosphate-d15, 1.2ml x 50ug/ml, toluene Price on request 32852 EPA Method 551 - Disinfection By-Products Price on request