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Type 1: 2.5-50 ppm
Type 2: 10-500 ppm
Type 3: 100-5000ppm
Type 4: 0.1-5%
Type 5: 10-1000ppm
Type 6: 0.5-20%
Type 7: 2-100%
Note: The longer gas detection tube can be customized according to the user's needs.