Gun Shot Residue Single Element Kit Back Catalog number: 52257 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 70318 1,2,3,4-Tetrachlorobenzene, 1000µg/ml in MeOH, 1ml Price on request 38338 CWA PAHs - 610 Price on request 71482 5-Methylchrysene Price on request