how much is air purifier - An Overview
The AQ-5200’s ANSI/NSF certifiications (PDF) include chlorine, which is used to kill pathogens in municipal water supplies and is particularly the chief reason behind “lousy-tasting” faucet water; guide, which can leach from aged pipes and pipe solder; mercury; live cryptosporidium and giardia, two potential pathogens; and chloramine, a persi