Filtration

Capsule Filters

Capsule filters offer a ready-to-use solution for water, buffers, and reagents used in a broad array of medical devices. Capsule filters can also serve to protect equipment and mitigate odors as part of air flow management. The pleated internal filter design optimizes the effective filtration area (EFA), delivering maximum performance while maintaining a compact footprint within the system. Saint-Gobain Medical offers customization in size, material, and configuration to address the unique challenges of each application.

Capsule Product Details

Features & Benefits

Design & Construction

  • Ready-to-use design for easy integration
  • Housing materials include polypropylene (PP), gamma-stable PP, and polyethylene
  • Nylon endcaps available
  • Manufactured by thermal bonding, no adhesives used

Performance & Functionality

  • Pre-filtration, sterile filtration, and multi-stage filtration for liquids and gases
  • Filter materials with pore sizes from 0.05 µm to 300 µm

Customization & Compatibility  

  • Four (4) standard configurations, customizable options
  • Junior, Mini, Mid-Size, and Full-Size (ZenCap®) capsules, EFA from 150 to 22,000 cm2
  • Multiple vent options available for venting air and purging liquid
  • Tailored to meet biocompatibility (e.g. USP Class VI) and sterilization (e.g. ETO) requirements
  • Wide selection of inlet/outlet fittings to prevent installation errors and fluid loss
     

Typical applications

  • Endoscope Reprocessing: Pre-filtration and final filtration (sterilizing grade) of water and cleaning reagents used in endoscope reprocessing.
  • Organ Preservation: Particulate removal from organ preservation solutions.
  • Point-of-Use Water Filtration: Sterilizing grade point-of-use water filtration for clinical, dental, and other critical settings where exposure to bacteria and other pathogens is of concern.
  • In Vitro Diagnostics: Particulate removal of samples, reagents, and cleaning fluids to protect IVD equipment and extend maintenance cycles. Odor mitigation and vapor control via in-line exhaust filtration.  
  • Flow Cytometry: Sheath fluid, air, and cleaning fluid filters to mitigate interference in the diagnostic assessment and maximize uptime in flow cytometers.

Standard Dimensions

Capsule Size

Junior

Mini

Mid-Size

Full-Size (ZenCap(R)) ‡

Diameter 
in (mm)

1.6 
(41)

2.32 
(59)

2.88 
(73)

3.54 
(90)

Length*
in (mm)

1.6 
(41)

3.9 
(60)

2.7 - 11 
(68 - 281)

13.9
(352)

Effective Filtration Area** (EFA) 
in2 (cm2)

31 
(200)

66 
(427)

111 - 806 
(720 - 5200)

728.5 - 1302 
(4700 - 8400)

* Exact length varies by fitting type
** Final EFA is media dependent
‡ Up to four full-size ZenCap® capsules can be combined in series to create capsule lengths up to 40 in

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