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How to sample a cubic meter of VOC emission test box
Date: Jan 11,2020 Views: 685
(1) Sampling timeIn principle, air sampling is performed on the first day (24h), 3 days (72h), 7 days, (14 ± 1) days and (28 ± 2) days after the start of the test. Air sampling can also be performed at other specified times.
(2) Air sampling
Sampling can only be performed after the temperature and relative humidity in the climatic chamber are stable for 8 hours.
(3) Sampling of formaldehyde
The sampling of formaldehyde in the air at the exit of the climatic box shall be performed in accordance with the GB / T17657 standard for formaldehyde collection.
(4) Sample of Voc (
Connect the constant-current sampler to the Tenax TA adsorption tube, connect the sampling end of the adsorption tube to the climate chamber sampling port, and use the constant-current sampler to collect VOC in the air at the outlet of the climate box. The sampling flow and sampling time are determined according to the VOC concentration in the box.
