It is useful to use formaldehyde detection instruments. Now everyone is very concerned about the indoor formaldehyde content, so they will use various methods to remove it. It is very useful to use formaldehyde detection instrument to detect. You can also find a professional air quality testing agency to test the air environment at home.
The formaldehyde detector is an instrument for detecting formaldehyde. The semi-quantitative determination of formaldehyde in indoor air is realized, which has the characteristics of simple structure, small volume, convenient carrying and use and intuitive. It can be widely used for on-site quantitative and qualitative detection of formaldehyde in the air of rooms, indoors, residential areas, public places, living places, factories and mines.
The formaldehyde detector adopts the principle of high-sensitivity electrochemical sensor, combined with single chip microcomputer technology and network communication technology to collect and detect air samples at the scene. Formaldehyde in the air is absorbed by phenol reagent solution to generate azine, which is oxidized by trivalent iron ions in acidic solution to generate blue-green compounds. According to the color depth, direct colorimetric determination is carried out on the spot.
Because the detection value of indoor pollution has a great relationship with the temperature, humidity and air pressure of the detection environment, according to normal detection, the detection value often deviates from the expected value.
Product classification:
The 1. probe is used for testing. Representative instruments are XP-308, 4 160, PPM400, etc. It is characterized by direct reading of data and convenient carrying. The disadvantage is that it is greatly influenced by temperature and humidity and needs to be calibrated with standard gas. Low daily maintenance cost. The probe is generally replaced once every/kloc-0 year.
2. Analysis and reading by spectrophotometry showed that there were Japanese Riken FP-30 and domestic Chittagong Cygnet. The former uses finished tablets, and the instrument is small in size. Sampling 15 to 30 minutes, the accuracy can reach 0.005PPM, and the machine does not need maintenance at all.
The relative operation of cygnet is complicated. After sampling 15 minutes, the required steps are complicated and the accuracy can reach 0.0 1. This instrument also has the characteristics of high precision, little influence by interfering gas and temperature and humidity compensation.
3. The hand-held formaldehyde detector is a hand-held instrument that can continuously measure formaldehyde. This product is suitable for environmental monitoring, industrial production, chemical industry and other places with formaldehyde.
4. Portable formaldehyde detector can zero at the test site without the help of outdoor air. It is suitable for indoor formaldehyde gas detection in public places, indoor formaldehyde gas detection in civil buildings and formaldehyde content detection in building materials.
Refer to the above content: Baidu Encyclopedia-Formaldehyde Detector