Gun Shot Residue Back Catalog number: 52326 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 1720.13-K-IO 2-n-Propylnaphthalene, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 2027-19-2 Price on request 679577 Picric acid, 100 µg/ml, Acetonitrile, 10ml Price on request VHG-B100M5-5-100G Metals in Biodiesel Standard, 5µg/g , 100g Price on request