Portable and simple to use, the kit gives positive or negative colorimetric result to scale of 50 ppm. Clor-N-Oil is an accurate method to test for the presence of PCB. Kit reagents are sealed in glass ampules for consistent and accurate results. Screening with Clor-N-Oil can eliminate costly lab analysis. The kits are calibrated on Aroclor 1242; the PCB that contains the least amount of chlorine (42% by weight), so that the user obtains the most conservative results. Kit ontains complete step-by-step instructions. Conducts one test only.