Automotive vehicle VOC test chamber in the air quality testing, should be inspected by the vehicle in the environment for monitoring, monitoring items include: air oxygen, carbon dioxide, carbon monoxide, formaldehyde, xylene, toluene, the total volatile organic compounds (VOC) gas concentration, as well as the temperature, relative humidity, any direction of the ambient air velocity. Temperature, humidity, background concentration of various gases monitoring point at least two, the location should be no more than 0.5 m away from the outer surface of the vehicle being inspected within the space, the height of the vehicle with the location of the sampling point is comparable.

Environmental airflow velocity monitoring points at least three, the location should be in the front, top, rear of the vehicle under test from the outer surface of the body within a space of no more than 0.5m. Before using the car whole vehicle voc test chamber for vehicle air sampling, the inspected vehicle is in a stationary state and travelling for 2.5h~3h. During sampling, the doors and windows must be in a closed state, and the sampling is completed within 30min. If you have any questions, you can write to me privately, or visit the official website of "Huan Yi Instrument" to consult the relevant technical personnel.

Attachment: Automotive air composition content testing methods Oxygen: electrochemical oxygen measurement method GB/T 19904

Carbon dioxide: non-spectroscopic infrared gas measurement method GB/T 18204. 24

Carbon Monoxide: Infrared Gas Determination without Spectroscopy GB/T 18204. 23

Formaldehyde (HCHO): gas chromatography or spectrophotometry GB/T 18204.26 or GB/T 16129

Total volatile organic compounds (TVOC): gas chromatography GB/T 18883

Xylene: Gas Chromatography GB/T 14677

Toluene: Gas Chromatography GB/T 14677

Temperature: a) glass liquid thermometer method; b) digital thermometer method GB/T 18204.13

Air velocity: Digital anemometer method GB/T 18204.15