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Method of determining ammonia in a gaseous or liquid sample
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Gas discharge lamp with built-in resistance to color center formation in ultraviolet-transmissive window
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Gas discharge lamp with built-in resistance to color center formation in ultraviolet-transmissive window
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Method of determining H2 S
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Method of detecting hydrogen cyanide gas in a gaseous or liquid sample
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Gas sensor
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Photodiode
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Ion-selective electrodes
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Electrochemical cell
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Ion detection electrode arrangement
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Photoionization
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