The Toxi3Ltd disposable single-gas monitor from Biosystems offers an operating life of three full years, is economically priced and can detect CO or H2S. Featuring one-button automatic calibration, the compact unit is rated to IP65/IP67 against water ingress. The rugged Toxi3Ltd features an event logger, large display, loud alarm, and top and front mounted bright LED. Biosystems LLC, Bacou-Dalloz, Middletown,