2,2’,3,4,4’,5’-Hexachlorobiphenyl (138) Back Catalog number: 66138 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 10919.28-500MG Vitamin D2 ,neat,neat,500mg, Price on request 10265.24-100-IO Trixylyl phosphate, technical mixture,100 µg/mL,isooctane,1mL, Price on request 59886 Potassium (K) Price on request