Gun Shot Residue Back Catalog number: 53326 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 2821.7-10MG n-Perfluoroheptanoic acid Price on request 1832.19-K-ME Diethylene glycol mono(p-nonylphenyl) ether, mixture of isomers, 1000µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. Price on request 92894 WS Disinfection By-Products - Cal Check 1 Price on request