Gun Shot Residue Single Element Kit

1,2,4-Benzenetricarboxylic acid

Low level Nitrogen Calibration Units: 1x1mL ampoules or 10mL screwcapped bottle Nitrogen introduced using Aniline Catalogue No. Concentration Matrix: isooctane mg/kg (ppm) S-4142-0 Blank S-4142-05 0.5 S-4142-1

4-Phenyldibenzothiophene, 500µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 104601-39-0