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Millipak® Express Filter

0.22 µm membrane filter for particulate-free and bacteria-free water at the point of dispense, For use with Direct-Q®, Synergy® and Milli-Q® Academic / Biocel / Element / Synthesis / Gradient systems

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Millipak® Express 20 Filter


polyethersulfone filter
styrene-acrylonitrile (SAN) housing

Quality Level




removal of particulates and bacteria


pkg of 1 unit





pore size

0.22 μm pore size


for use with Direct-Q® UV
for use with Direct-Q®
for use with Milli-Q® Academic
for use with Milli-Q® Biocel
for use with Milli-Q® Element
for use with Milli-Q® Gradient
for use with Milli-Q® Synthesis
for use with Synergy® UV
for use with Synergy®

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General description

The Millipak® 0.22 μm hydrophilic membrane filter is intended to produce particulate- and bacteria-free water at the point of dispense of the water purification systems. The filter is designed with a 0.22 μm PES (polyethersulfone) asymmetric membrane filter heat-sealed on a styrene acrylonitrile housing. This minimizes organic and inorganic extractable release.


Purified water filtered through this filter can be used in any laboratory work where water free of bacteria or particulates is needed.

Features and Benefits

  • The unit is designed as a safe and efficient barrier against particulates and bacteria.
  • The membrane′s conical pores allow a high flow rate at a low differential pressure.
  • The membrane, housing material, and production processes have been selected to minimize organic and inorganic extractable release.
  • The membrane is supported by a rigid plastic disc with channels that ensures high water flow and resistance to pressure variations without the risk of membrane rupture.
  • Connects to the outlet of the water delivery point, such as the PODs of Milli-Q® water purification systems.
  • The protective bell protects against intrusion of airborne bacteria contamination during dispensing.
  • Care-free maintenance: the filter is easily fitted and replaced.
  • Non-sterile. Delivered hermetically sealed, with its Certificate of Quality.

Other Notes

Directions for Use

  • Organism Retention: Microorganisms
  • Mode of Action: Filtering
  • Application: General laboratory analysis
  • Intended Use: Water purification
  • Instructions for Use: This item provides water filtered through 0.22 μm sterilizing-grade membranes. Refer to the system equipment user guide section "Using the System" (available on USB key in the system box).
  • Storage Statement: Store in a dry location
  • Disposal Statement: Dispose of in accordance with applicable federal, state and local regulations.

Legal Information

DIRECT-Q is a registered trademark of Merck KGaA, Darmstadt, Germany
Durapore is a registered trademark of Merck KGaA, Darmstadt, Germany
MILLIPAK is a registered trademark of Merck KGaA, Darmstadt, Germany
Milli-Q is a registered trademark of Merck KGaA, Darmstadt, Germany
SYNERGY is a registered trademark of Merck KGaA, Darmstadt, Germany

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