GX-3R PRO The GX-3R Pro is the world’s smallest 5-gas monitor weighing only 4.58 ounces and fits in the palm of your hand (2.9” W x 2.6” H x 1.06” D). It simultaneously monitors and displays 5 different gases. In addition to monitoring standard confined space gases, LEL, O2, CO, & H2S, the GX-3R Pro has a 5th channel where you can add infrared or toxic sensors. Two of the four sensor slots have interchangeable sensors providing flexible configurations, which can easily be changed in the field. LEARN MORE
GX-3R The GX-3R represents the latest evolution of gas detection technology utilizing a new generation of micro sensors. The LEL sensor has a unique design with two active filaments in one sensor to increase it’s resistance to silicone poisoning. If one filament gets poisoned the second filament takes over. The new O2 sensor is electrochemical with a 3 to 5 year life span. H2S and CO are now available in a combo micro sensor.


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Since 1983, Bomark Instruments Inc. has been the metro New York area’s premier distributor of industrial hygiene, environmental monitoring, and safety instrumentation. Our reputation for excellent customer service in this demanding market is unsurpassed. We are also WBE (Woman Owned Business Enterprise) certified in New York City. Call us with the confidence in knowing that we build business relationships designed to last.