Metals Calibration Standard Revised Back Catalog number: 50189 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended DF-2348-S 2,3,4,8-Tetrachlorodibenzofuran, 1.2ml x 50ug/ml, nonane Price on request 681429 Closantel sodium, 100mg Price on request 677717 2,3,5-Trimethylphenol, 100 µg/ml, Acetonitrile, Price on request