Use method of hydrogen detection tube:
Cut the two ends of the detection tube and use a positive pressure sampler to connect the zero end to the outlet. Sampling 100 milliliters in 200 seconds and passing through the detection tube can read at the upper end of the light pink discoloration column.

The hydrogen detection tube can be quickly detected without any energy or power supply. It has the characteristics of simple operation and convenient carrying. It can also detect the hydrogen content in the air.

1 to 4%
Note: The longer gas detection tube can be customized according to the user's needs.