Calibration Standard Mix 4 Back Catalog number: 52036 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 11774.12-100-IO 2,3,3',4,4',5,5',6-Octachlorobiphenyl ,100 µg/mL,isooctane,1mL, Price on request 11907.20-100MG Fluorescein disodium salt dihydrate, 90%,neat,neat,100mg, Price on request 684134 1,1,1,2-Tetrachloroethane, 100 µg/ml, Methanol, Price on request