| 摘要 |
PURPOSE:To perfectly remove an endotoxin especially difficult to remove among pyrogens by transmitting pyrogen-containing water through an adsorbent layer and a precise filter membrane module and subsequently transmitting the same through an ultrafiltration membrane module. CONSTITUTION:Tap water is transmitted through a packed bed of an adsorbent represented by activated carbon to adsorb and remove residual chlorine or org. matter (offensive smell components such as a mold smell or pyrogens). Further, the fine particles such as iron rust or bacteria in tap water are prevented from transmission by a precise filter membrane module. An ultrafiltration membrane module perfectly blocks pyrogens not remove by the adsorbent and the precise filter membrane module. Therefore, as the ultrafiltration membrane module, one showing fractionating characteristics (a nominal fractionation mol.wt.(MW) being an MW showing an inhibition ratio of 90% on the basis of polyethylene glycol is about 10000) or one required in characteristics on a further small MW side is used. |
