紫外线过滤器占印度过滤器市场的三分之二，反渗透式，化学过滤器，占其余的三分之一。
UV filters have about two-thirds of the Indian market, with reverse osmosis and chemical filters accounting for the rest.
这些反渗透膜能分离水分子，以及在微过滤器中分离小颗粒物质。石膏会在磷矿颗粒的表面上结晶。
These range from separation of water molecules by reverse osmosis through separation of small particles in microfiltration.
在稳流试验台上进行了微粒过滤器的压力损失与流量测试试验，运用测得的数据计算了微粒过滤器的渗透率。
In steady flow rig the pressure drop and the mass flow rate of the DPF were measured, and the measured data are used in the estimation of DPF permeability.
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