MCPA Back Catalog number: 79523 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 68127 3,3',4,5,5'-Pentachlorobiphenyl (127) Price on request 675242 N,N-Dimethylsulfamide, 100 µg/ml, Acetonitrile, Price on request 52040 Interference Standard Mix 2 Price on request