The present application relates to a multizone, unsupported, microporous, high throughput membrane. The membrane includes a first microporous zone, a second microporous zone, and a third microporous zone, where the third microporous zone is positioned between the first and second microporous zones, with the first, second, and third microporous zones being integral with one another. Further aspects of the present application include a process for making the membrane and a filtration cartridge with the membrane of the present application.

The present application relates to a multizone, unsupported, microporous, high throughput membrane. The membrane includes a first microporous zone, a second microporous zone, and a third microporous zone, where the third microporous zone is positioned between the first and second microporous zones, with the first, second, and third microporous zones being integral with one another. Further aspects of the present application include a process for making the membrane and a filtration cartridge with the membrane of the present application.

The present disclosure relates to a membrane having uniform pore size and pore arrangement. The present disclosure provides a membrane including a plurality of pores, wherein the diameter of the plurality of pores is 100 m or less, the porosity is 20 to 80%, the thickness is 3 to 500 m, and the membrane is a single layer membrane.

A liquid composition which enables formation of a membrane with high designability suitable to be provided to a variety of industrial products, such as electronic devices and electronic device components, is provided. Here, (A) indicates a resin component, (B) unevenness forming particles, (B1) inorganic small particles having a particle diameter (d.sub.1) of 0.05 m or more and 0.4 m or less, (B2) inorganic-type large particles having a particle diameter (d.sub.2) of 2 m or more and 6 m or less, and (C) a diluent solvent. The liquid composition is for forming a membrane by spray coating and comprises at least (A), (B) and (C). The (B) is contained in an amount of 20% by mass or more and 60% by mass or less in 100% by mass of a total amount of the total solid content in the composition. The (B) contains (B1) and (B2) in an amount of 90% by mass or more. A mass ratio of (B2) to (B1):1 is 1.8 or more and 3.3 or less.