ASTM D-3230-89 Back Catalog number: 50223 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 81406 Diazinon Price on request 66049 2,2',4,5'-Tetrachlorobiphenyl (49) Price on request S-4724-100-NNX10 Mix of deuterated PCBs (28,52,101), 100µg/ml in Nonane, 10 x 1ml Price on request