An air quality test tube for detecting hydrogen sulfide in the air. Tester shows a level of 20 parts per million in the air

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Size: 5184px × 3456px
Photo credit: © royalty free Arctos photos / Alamy / Afripics
License: Royalty Free
Model Released: No

Keywords: air, danger, gas, h2s, hand, health, hydrogen, pisonous, quality, safety, sample, sampling, sulfide, test, tester, testing