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| The cross-sensitivity of the C2H2 sensor to C2H4 is about 1% | The cross-sensitivity of the C2H2 sensor to H2 is less than 0.1% | 
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| The C2H2 sensor has little response to CO | The C2H2 sensor has little response to the VCM | 
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| The C2H4 sensor has little response to CO | The cross-sensitivity of the C2H4 sensor to H2 is about 0.125% | 
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