unit sampling
7.3) the sampling efficiency is high: the sampling efficiency higher than 99.9% for particulate iodine sampling unit, and CH 3I retention efficiency of 99.997% can be achieved with only one 2 cm deep activated carbon cartridge when the sampling flow rate is 3 m 3/h and the relative humidity is lower than 40%, hence suitable for in situ testing of iodine adsorber;

