Mixed Calibration Kit Back Catalog number: 53052 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended C-025N 2,3',4-Trichlorobiphenyl, 5mg Price on request 11702.12-100-IO 2,3',4',6-Tetrachlorobiphenyl,100 µg/mL,isooctane,1mL, Price on request 54125 Total Dissolved Solids Price on request