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Gas Leak Detector PT804 LCD Display NH3 Ammonia Gas Detector Professional Meter Concentration Temperature Measurement Alarm Value Settable Gas Sniffer : Amazon.co.uk: DIY & Tools
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PS500 Multi Gas Detector - Ammonia Gas Detectors, Carbon Dioxide Detectors, Carbon Monoxide Gas Detectors, Chlorine Gas Detectors, Volatile Organic Compound (VOC) Detectors, Hydrogen Sulfide Gas Detectors
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