These KEM Medical monitoring badges are easy to use and light weight. Each AN94 Vapor-Trak Monitor is manufactured to meet and exceed applicable OSHA and NIOSH accuracy requirements at both 8-hour TWA and 15-minute STEL levels. Can be comfortably worn in the employees breathing zone to measure personal exposure and may also be used for area exposure monitoring. Monitors include analysis. Analysis of each monitor is performed promptly after the mailer is received. An independent laboratory analysis report for your record keeping. An immediate email notification will accompany elevated results. Monitors are enclosed within a postage paid mailer for convenient return to the laboratory.