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GX-2009, 4 gas, LEL / O2 / H2S / CO with alligator clip and 115 / 220 VAC charger by RKI Instruments: Science Lab Gas Handling Instruments: Amazon.com: Industrial & Scientific
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4 Gas, Confined Space, Gas Monitor. Features Simultaneous Detection of LEL, O2, H2S & CO. World's Smallest and Lightest Portable Multi Gas Detector. MSHA
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RKI Instruments GX-2009 Multi-Gas Monitor Pump Probe Assembly Kit - 28458 - Northern Safety Co., Inc.
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