Abstract: A disposable self-sensing signal test strip includes a test strip body. The test strip body has a detection area and a circuit area. The detection area has a detection circuit. An electrochemical processing unit, a wireless transmission unit, and a power source unit are provided in the circuit area. The detection circuit is electrically connected to the electrochemical processing unit. The electrochemical processing unit sends to the detection circuit a control signal for performing detection. After receiving the control signal, the detection circuit reacts electrochemically with the test sample and sends a feedback signal to the electrochemical processing unit. The electrochemical processing unit converts the feedback signal into a detection parameter signal and sends the detection parameter signal through the wireless transmission unit to a receiving unit. The power source unit supplies electricity to the electrochemical processing unit and the wireless transmission unit.

Abstract: A gas sampling bag for gas pH measurement includes a main sampling chamber and an electrochemical test strip accommodating chamber for accommodating an electrochemical test strip. The electrochemical test strip includes a strip body, a working electrode, a pH sensing layer, a reference electrode and a solid water absorption layer. The working electrode has a first part located in a detection area of the strip body. The pH sensing layer is formed on the first part. The reference electrode has a second part located in the detection area. The solid water absorbing layer is formed on the detection area and covers the pH sensing layer and the second part. The solid water absorbing layer is used for absorbing or adsorbing water in the gas sample to form an electrical connection between the first and second parts.