This website uses cookies. By using the site you are agreeing to our Privacy Policy.

PSE Cartridge W

In order to meet strict contamination control requirements for ultra-pure water, polysulfone membranes have been employed because they are excellent high-polymer separation membranes.
The lineup includes membrane pore sizes of 0.1 µm, 0.2 µm, 0.45 µm, 0.8 µm, and 1.2 µm.


The cartridge demonstrates excellent filtration performance with various types of cleaning water in the electronics industry, water in the food industry, and plating fluids and developers. It provides support for process cleaning efforts.

The AstroPore PSE Cartridge W employs, as its filtering material, polysulfone, which demonstrates excellent filtering characteristics as a high-polymer separation membrane.
Featuring high efficiency in retaining fine particles and microorganisms, this high-performance, high-quality filter is housed in a cartridge that is pre-washed with ultra-pure water.
The full lineup includes membrane pore sizes of 0.1 µm, 0.2 µm, 0.45 µm, 0.8 µm, and 1.2 µm, and its excellent porous membrane structure and filtering characteristics contribute greatly to precision filtering of various types of manufacturing water such as cleaning water in the electronics industry and preparation water.


  • High-performance micro-porous structure — The micro-porous structure of the polysulfone membrane is asymmetric as a whole and contains a dense layer formed in the inside. It has large pore sizes both at the inlet and outlet, which further improves the filtration characteristics.
  • Excellent separation and retention performance — The dense layer and a well-defined pore size distribution inside the membrane enable reliable retention and high-precision filtration of fine particles and microorganisms.
  • Low initial pressure loss and long service life — The high porosity rate of 80%, advantageous asymmetric membrane structure and large filtration area ensure low initial pressure loss and a long filtration service-life.
  • Quick specific resistivity recovery with minimal flushing — The cartridge is made of carefully selected plastic materials for a high filter cleaning effect. The initial specific resistivity can be quickly recovered by flushing the filter slightly, thus quickly restoring the supply of ultra-pure water.
  • Increased variety — The cartridge is available in 5 pore sizes: 0.1 µm, 0.2 µm, 0.45 µm, 0.8 µm and 1.2 µm. Since it is available in 7 shapes (G, M, P, MP etc.), the shape can be selected according to the application.


The cartridge offers excellent removal performance of fine particles and microorganisms from various types of process water used to manufacture semiconductors in the electronics industry.

  • For pure water in various fields of manufacturing such as cleaning water for liquid crystals and semiconductor devices
  • For water in various fields of manufacturing in the liquid crystal and semiconductor related industries
  • For water in various fields of manufacturing that produce electronic tubes such as cathode ray tubes, and other related parts
  • For filtering water used in the food industry
  • For various types of ultra-pure water at research facilities and laboratories
  • For pure water in various fields of manufacturing industries


Table of Performance Characteristics

Item Unit Performance Remarks
Pore size µm 0.1 0.2 0.45 0.8 1.2
Size Length mm - *
Outer diameter mm 70
Inner diameter mm 26 G type
Maximum differential pressure 25℃ MPa 0.54 (Positive pressure)
25℃ 0.34 (Negative pressure) **
70℃ 0.29 (Positive pressure)
70℃ 0.20 (Negative pressure) **
Heat resistance MAX℃ 90 ***
Applicable range of pH used Support material: PP 1 - 14
Support material: Polyester 1 - 13


  • * Refer to the “Sizes” table.
  • ** Do not let backflow occur except for instantaneous Negative pressure being applied.
  • *** 70℃ is applicable to G type Double & Triple products.
    Because hot water may deteriorate the parts if used for a long period of time, prior checks should be carried out.
  • *4 In the case of using the cartridge for chemical fluid filtration, prior evaluation should be carried out under the planned conditions of use.


Type Single (1-stage) type Double (2-stage) type Triple (3-stage) type
Shape G type M type P type Q type G type M type P type G type M type P type
Dimension (mm) Length
(without packing)
244 257 313 245 496 509 565 748 761 817
(with packing)
252 - - - 504 - - 756 - -

Structure and materials

A polysulfone membrane and 2 layers of pre-filter supports are pleated together and integrally molded by thermal fusion bonding. (Example: G type)

[Image] Structure and materials

Initial cleaning and specific resistivity recovery

[Image] Initial cleaning and specific resistivity recovery

Water flow differential pressure

[Image] Water flow differential pressure

Abbreviated product name

[Image] Abbreviated product name

Chemical resistance

The following data have been obtained by checking the filtration performance after 24-hour immersion testing at normal temperature. Please check the chemical compatibility under your conditions before use.

Ο - Compatible, × - Incompatible
Classification Chemical name Result
(support material: PP)
(support material: Polyester)
Halogenated hydrocarbonTrichloroethylene××
EtherEthyl ether××
GlycolPropylene glycolΟΟ
Benzyl alcohol××
EsterEthyl acetate××
OthersNitric acid
(6 mol/L)
Sulfuric acid
(3 mol/L)
Hydrochloric acid
(6 mol/L)
Sodium hydroxide
(6 mol/L)
Aqueous ammonia
(1 mol/L)


The lineup has 7 shapes — G, M, P, MP etc. — with different sealing mechanisms.

[Image] Types

Sterilization treatment

The cartridge can be repeatedly sterilized. Sterilization should be carried out at regular intervals to ensure reliable removal of microorganisms and to maintain filtration performance.

Hot water sterilization


Chemical sterilization
  • Hydrogen peroxide solution: 5%
  • Formalin: 1%
  • Sodium hypochlorite: 10 ppm (chlorine water)