反渗透：精度为0.0001微米.水溶液的不可溶物质(铁锈、泥沙等悬浮物)、胶体物质、微生物、有机物和可溶解的物质都不能通过反渗透膜.
0.0001 microns reverse osmosis: precision. The aqueous solution of
unsolvable substance (such as rust, sediment suspension), colloidal substance,
microbe, residual chlorine, organic matter and soluble substances by reverse
osmosis membrane.
