Pipeline Style SDI(FI) Pollution Index Apparatus

Description:
SDI value is determined by attenuation of water flow velocity, when water flow entering microfiltration membrane(outer dia 0.47mm, pore size: 0.45um). At pore size-0.45um,colloid sustances more easily occlude filter membrane than hard particles( such as sand,dirt,rust,scale etc.),so this pore size is ususally used for determination of the SDI value. The attenuation of water flow velocity transformed into numerical value between 1 and 100, namely SDI value,the SDI value is smaller, the filter membrane is not more easily polluted and occluded by particles and colloid substances in water.Considering economy and efficiency roundly, the SDI value of ther water entering the recerse osmosis device,is generally required under "5".

Brand:	minipore
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