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Millistak+® Depth Filter in μPOD format

A1HC, cellulose fiber, filtration area 0.0023 m2, hydrophilic

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Millistak+ Depth Filter in Pod format, A1HC media series, 23 cm2 surface area, Luer fitting connection


cellulose fiber
filter aid (inorganic)
glass fiber-reinforced polypropylene

Quality Level






1.0 bar max. differential pressure (15 psid) at 40 °C (Reverse)
2.1 bar max. differential pressure (30 psid) at 40 °C (Forward)


6.6 cm (2.6 in.)


8.9 cm (3.5 in.)

filtration area

0.0023 m2


<0.25 EU/mL (LAL test, Aqueous extraction)

gravimetric extractables

420-750 mg/ft2


sample type liquid


3.64 – 10.5 μS/cm (product water; post autoclave (1 cycle of 60 minutes at 123 °C) and pure water flush of 10 liter per ft²(100 L/m²) of media surface area)

filter grade


shipped in


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General description

The Millistak+® depth filter media is offered in a scalable, disposable format providing greater flexibility because of its unique modular design. The Millistak+® MA1HC23CL3 comes in a μPOD format featuring a 6.6 cm (H) x 8.9 cm (L) and a filtration area of 0.0023 m2.

This A1HC media series delivers optimal performance through a gradient density matri, ideal for post-TFF clarification fluid applications. Millistak+® Pod filters are available in three distinct series of media grades in order to meet your specific needs - DE, CE and HC.

The Millistak+® Pod system is ideal for a wide variety of primary and secondary clarification applications, including cell cultures, yeast and E. coli lysates post centrifuge, E. coli refolds, media, vaccines, plasma proteins and sera.

Easy to Use

With the compact, modular design of our Millistak+® new Pod system, you can increase productivity and shorten cycle times.

Installation and setup of the Pod system is simple and straightforward. The unique design of the disposable adapters and disposable manifolds makes it easy to connect the Pod filters to rest of the unit operations in the process. The self-contained and disposable nature of the system protects operators from exposure to biohazards and eliminates maintenance as well as cleaning validation requirements.


Post-TFF (Prostak) clarification fluids

Features and Benefits

  • Low hold-up volume for greater product yield
  • Broad range of media types offered in single and multilayer products
  • Millistak+® HC dual-action media improves prefiltration and compresses clarification
  • Flexible, modular format offers scalability from 5 to 12,000 liters or more
  • Patented disposable design eliminates need for housing, CIP or cleaning validation
  • Self-contained Pod filters protect operators from exposure to biohazards
  • Robust construction is easy to use and set up
  • Smaller footprint facilitates use in tight spaces


Filter Grade: A1HC

Preparation Note

Sterilization Method
2 autoclave cycles of 60 minutes at 123 °C.

Analysis Note

Gravimetric Extractables: per 24-hour static soak in pure water; (type 1 DI water), post autoclave (1 cycle of 60 minutes at 123 °C) and pure water flush of 10 liters per ft2 (100 L/m2) of media surface area

Legal Information

MILLISTAK+ is a registered trademark of Merck KGaA, Darmstadt, Germany
Prostak is a trademark of Merck KGaA, Darmstadt, Germany

Storage Class

10-13 - German Storage Class 10 to 13




Not applicable


Not applicable

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