Gun Shot Residue Single Element Kit Back Catalog number: 52257 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 684085 Trichloroacetic acid, 100 µg/ml, Acetonitrile, 1 Price on request 50135 ICP-MS Mix Price on request 674806 Oxyphenbutazone monohydrate, 50mg Price on request