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Wenzhou Maikai sterile polyvinylidene fluoride (PVDF) filtration membrane method
2024-10-17 13:17:38
1, put the filter membrane flat in the cleaning container, soak it with distilled water, so that it is fully soaked, more than 4 hours, and then clean it with distilled water before use.
2, the cleaned filter membrane (wet) into the matching filter to prevent leakage around, you can filter.
Because the aperture of the filter membrane is relatively small, the flow rate of atmospheric pressure filtration is slow, and the vacuum pump negative pressure filtration or air pump pressure filtration can be generally used.
3, in the actual use process, for the operation that is not particularly high, you can filter directly without the above steps, but it will have a slight impact on the filtration speed or the flexibility of the filter membrane, and the flexibility of the filter membrane after soaking will be better, and the flow rate will be faster.
4, the accuracy belongs to the range of fine filtration, generally not suitable for liquid filtration with more impurities, nor for liquids with larger viscosity, such as after filtering a certain amount, the filtration pressure is significantly increased (above 0.15MPa), the flow rate is significantly smaller or no liquid, you need to replace the filter membrane, the solution with more impurities, the filter membrane or other filter media with greater accuracy can be pre-filtered.