Dad evaluation belongs to the brand of Hangzhou Dad Evaluation Technology Co., Ltd., which was founded by Wei Wenfeng's "Wei Dad" on 20 15, providing services such as popular science evaluation, e-commerce optimization and convenience detection for the public.
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.