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MSA 10178557 ALTAIR 4XR Multigas Detector - (O2, H2S, CO), Color: Charcoal, Portable Gas Monitor, Durable, Handheld, UL/CSA Approval, Includes Instrument Only - - Amazon.com
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Amazon.com: Hydrogen Sulfide Detector by Forensics | USA NIST Calibration & Certificate | Dust & Explosion Proof | USB Recharge | Sound, Light and Vibration Alarms | 0-100ppm H2S | : Industrial & Scientific
ATO Handheld Hydrogen Sulfide (H2S) Gas Detector, 0 to 200 ppm High Accuracy Industry H2S Gas Detector, H2S Monitor - - Amazon.com
H2S Detector Hydrogen Sulfide Monitor Portable Sound and Flash Alarm h2s Gas Monitor for Safety and Environmental Monitoring - - Amazon.com
