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  1. Yul

    Why membrane pretreatment must use Ethanol?

    Dear all members, Hydrophobis membrane usually must be prewetted. And in every book or journal I have read, they always use ethanol. I am confuse. Why must ethanol? Why not methanol instead? Thank you, Yul
  2. Yul

    Problem with flux after pretreatment

    I am doing a research with polysulphone membranes. The pretreatment for the membranes was done by submerged it in the ethanol 80%. As far as I know, after submerged in the ethanol, the flux should be going up. But my experiment result showed that the flux was going down. Can anybody please help...

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