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How do Breathalyzers work? | Chemistry behind the breathalyzer | Alcohol testing Devices|In English. - YouTube
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2 x Alcohol Breathalyzer Breathalyser Breath Tester Kit - UK & EU Certified Test Kits - readouts for 0.0, 0.2, 0.5 and 0.8 see chart for every Country in EU : Amazon.co.uk: Automotive
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