Working principle of formaldehyde detector

The formaldehyde detection instrument has the principle of high-sensitivity electrochemical sensor. Combining single-chip technology and network communication technology to collect air samples at the detection site, the formaldehyde in the air is absorbed by the phenol reagent solution, and the oxazine is translated to produce the oxazine. The oxazine is displayed as the ferric ion in the acid solution. Oxidized to form blue-green compounds, according to the color depth, direct colorimetric determination on site.

Since the detection value of indoor pollution has a great relationship with the temperature, humidity, and air pressure of the detection environment, according to the normal detection, the detected value will often deviate from the expected value.

Precautions for formaldehyde detector

1. The test water must be distilled deionized or purified water.

2. Do not connect the bubble absorption bottle to the air inlet, otherwise it will cause back suction, damage the instrument, and lose the absorption liquid.

3. All glassware should be cleaned with acid lotion, tap water and distilled water in the chemical laboratory before use.

4. After each test, the colored solution in the bottle should be absorbed by bubbles in time, and then cleaned with acid lotion, tap water, and distilled water.

Testing consumables for formaldehyde detector

Formaldehyde detection reagent, used with air detection equipment, can detect the concentration of various gases in more than 10 minutes.