id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
cet-12803		cet-12803		6	.pdf	application/pdf	3352	128	47	Active carbon filters operate best under relative humidity’s below 65 % (Gong and Keener, 1993). The carbon set-ups needed to have 7.29 l of active carbon, which was mounted in a PVC column with an inner diameter of 185 mm and a height of 270 mm.	cache/cet-12803.pdf	txt/cet-12803.txt