The company has recently published a four-color pocket reference guide that describes its complete line of instruments for the health and safety market, including respirator fit testing, IAQ, particle sampling, and gas detection. For example, the PortaCount® Plus Respirator Fit Tester and N95 Companion™ are designed to automatically calculate accurate quantitative fit factors following OSHA-approved protocols. Also highlighted are the company’s IAQ instruments including the Q-Trak™ IAQ Monitor, the P-Trak™ Ultrafine Particle Counter, and the DustTrak™ Aerosol Monitor. — TSI Incorporated St. Paul, MN