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MX4 Ventis, LEL (Pentane), CO, H2S, O2, Li-ion extended Battery, Desktop Charger, pump, High Visibility Orange: Science Lab Gas Handling Instruments: Amazon.com: Tools & Home Improvement
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Industrial Scientific Ventis Pro5 Multi-Gas Detector - LEL (Pent), CO/H2S, NH3, O2, Extended Li-ion, pump (orange) – Bomark Instruments
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Industrial Scientific Ventis Mx4 Gas Detector Sensor H2s 17134479, Co 17134487,no2 17134503,so2 17143595,co/h2 Low 17155564 - Exhaust Gas Oxygen Sensor - AliExpress
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Ventis MX4 Personal Four-Gas Gas Detector, Black (O2, LEL-Pentane, H2S, CO), VTS-K1231100101 | USABlueBook.com
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