CCME PAH Calibration Standard Back Catalog number: 60034 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 70385 Ethylenethiourea, 1000µg/ml in Ethylacetate, 1ml Price on request 34571 1,2,4,5-Tetrachlorobenzene Price on request 675107 Sodium p-n-tridecylbenzenesulfonate, 100 µg/ml, M Price on request