The present invention provides a secondary packaging container and a method for packaging hemodialysis dialyzers. The container may comprise a box and at least a packaging division positioned horizontally to fit in the box. The packaging division contains a plurality of housing cavities capable of receiving a plurality of dialyzers. The disclosed secondary packaging container and method protects the integrity of hemodialysis dialyzers during transportation and storage.

A perfluoropolymer hollow fiber composite membrane preparation method includes the steps of (A) preparing a supporting layer of the perfluoropolymer hollow fiber composite membrane, (B) preparing a membrane casting solution, which includes obtaining a mixed solution by mixing a perfluoropolymer water dispersion emulsion, a spinning carrier and solvent, and defoaming the mixed solution at vacuum and a constant temperature, (C) preparing a nascent hollow fiber composite membrane, which includes compositing by uniformly coating the membrane casting solution on an outer surface of the supporting layer through an annular spinneret using chemical fiber concentric circle composite spinning technology, putting the supporting layer after compositing into a coagulant, solidifying and forming, and (D) drying after putting the nascent hollow fiber composite membrane to a hot air box, cleaning, sintering, and performing heat preservation. The prepared membrane has a thin wall, thermal and chemical resistance and good mechanical performance.

The invention relates to a method for transporting a filter module (10) comprising an elongate and tubular housing (12) and at least one flat filter segment (26) arranged in the housing (12), said method comprising the following steps: a. arranging the filter module (10) in a transport container (44); and b. orienting the filter module (10) in the transport container (44) such that a plane of the filter segment (26) is arranged at least approximately vertically in the normal transport position of the transport container (44).

A semiconductor filter may be treated by fluorinating the surface of the filter. The filter has a polymer membrane held by a support structure within the filter's housing. The housing has an inlet and outlet for fluids being filtered, with the membrane held between the inlet and outlet. The support structure holds the membrane such that fluids flowing through the filter pass through the membrane. The treatment purges air from the filter before flowing a gas mixture including a fluorination agent through the filter, including the membrane.

This disclosure relates to the use of a hydrophobic hollow fiber filter for the filtration of cell cultures and other biological perfusions, due to its resistance to fouling, as well as the ability to filter solutions with a high solid content. A hydrophobic hollow fiber filter may be used within a filter housing in conjunction with a process vessel and a traditional separation system. When the system is used with alternating tangential flow or tangential flow filtration, the hydrophobic hollow fiber filter results in more effective filtration of the filtrate, leading to greater concentration of the retentate, even in solution containing high levels of solids.

A package comprises an airtight container having an oxygen permeability of less than or equal to 15 ml/m.sup.2dMPa and water vapor permeability of less than or equal to 2 g/m.sup.2d, and a sub-nano membrane structure accommodated in the airtight container. The sub-nano membrane structure having a porous support and a sub-nano membrane. The sub-nano membrane formed on the porous support and having an average pore diameter of less than or equal to 1 nm.

Provided is a means which makes it possible to prevent quality deterioration of a facilitated transport membrane for a long period of time. A method for packing the facilitated transport membrane selectively allowing a specific gas to permeate therethrough, includes the steps of: putting the facilitated transport membrane in a packaging body having a transmission rate of not more than 10,000 cm.sup.3/(m.sup.2.Math.24 h.Math.atm) for the specific gas; preventing a contact between the facilitated transport membrane and the specific gas; and lastly sealing the packaging body.

The forward osmosis membrane and the preparation method thereof provided by the present invention, through fully cover the support mesh layer of the membrane with antibacterial nanoparticles, especially the mixture of nano-Ag and nano TiO2, ensures without reducing the strength, water flux and salt rejection, providing an effective, long-term and comprehensive antibacterial effect. In the present invention, the antibacterial nanoparticles, especially the mixture of nano-Ag and nano-TiO2, are used to carry out antibacterial modification on the support mesh of the forward osmosis membrane, so as to inhibit the growth of bacteria on the forward osmosis membrane, improves the forward osmosis and also improves the safety of the entire purification and filtration system. The antibacterial forward osmosis membrane of the present invention can be applied to the filtration and purification of complex water sources, especially the purification and filtration of eutrophic and bacteria-prone water sources.

The present invention relates to a composition comprising at least one aromatic polymer and at least one fluorinated polymer, articles made from such compositions and uses thereof.

A semiconductor filter may be treated by fluorinating the surface of the filter. The filter has a polymer membrane held by a support structure within the filter's housing. The housing has an inlet and outlet for fluids being filtered, with the membrane held between the inlet and outlet. The support structure holds the membrane such that fluids flowing through the filter pass through the membrane. The treatment purges air from the filter before flowing a gas mixture including a fluorination agent through the filter, including the membrane.