在Purified Water上？
ast particulates will be bacteria and products of bacterial degradation along with“fines”from ion exchange resins and other organic materials within the water purification system。
Wheredo Particulates come from？
Any particulates in the feed water will be rejected by reverse osmosis（RO）membranes or a series of filters，if fitted.Most particles within the water system will come from biofilms and those shed by ion-exchange（IX）resins，other media，tubing and fittings
What Applications do Particulates Affect？
分区进站和进站站系统入口入口，atomisers，pumps，LC columns and detectors，causing problems with many techniques including HPLC，ICP-MS，IC，ICP-OES，LC-MS and clinical analysers
How are Particulates Monitored？
There are no on-line methods of monitoring for particulates in purified water that are rapid or sensitive enough.The usual approach is to provide adequate filtration withion within the water purification system to prevent particulates reaching the product water and ensure that the bacterial count remains low to minimise ofilm biilm of buracil up， particulates in purified water are very rarely measured。
What Levels are Important？
The significance of impurities depends on the application.For most applications0.2µm filtration is adequate to remove bacteria and particulates from other sources。0.1 or 0.05µm filtration can be used to provide extra security。
How does ELGA Remove Particulate from the Water？
因ELGA systems over99%of particulates in the feed-water can be removed by high-rejection恢复osmosismembranes.Asubsequent storage reservoir is protected by vent-filtration.Particulate release from components is minimised by selection of high quality items and initial cleaning.In particular，high purity IX resins with low fines are essential。Any further growth of bacteria is limited by recirculation through a dual-wavelength ultraviolet chamber。This exposes the water to 185nm紫外线照射which oxidises residual organics to ionised species that can be removed byion-exchangeresins and bactericidal254nm UV which minimises the build-up of bacteria and the release of degradation products.Regular recirculation of the purified water is essential to minimise the build-up of bacterial biofilms。
