AERO LE High Flow Activated carbon tubes HIFAC-2B is an adsorption tube for volatile organic compounds which is packed with high quality molecular sieve carbon, also kind of high flow type that enables to sampling 1 L/ min of samples under attaching dehydration filter using SP208-1000 DualII. It is in accordance with sampling and measurement of chemical compounds in indoor air (solid absorption –solvent extraction measurement) released by the Ministry of Health, Labor and Welfare, Japan.