PCB Calibration Solution, 100µg/ml in Acetone, 1ml Back Catalog number: C-CCSEC-R Availability: In the manufacturer's stock Price on request - + Recommended 93199 EPA Method 526 Standard Price on request DF-2347-S 2,3,4,7-Tetrachlorodibenzofuran, 1.2ml x 50ug/ml, nonane Price on request 59811 Hexavalent Chromium (Cr +6) Price on request