Gun Shot Residue Single Element Kit Back Catalog number: 52257 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 2964.9-100-IO Propazine-d14 (di-iso-propyl-d14), 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 1219802-87-5 Price on request 32491 1,2,4-Trimethylbenzene Price on request 98628 624B Internal / Surrogate Standard Price on request