Membrane Filters

Pleated membrane filters for precise removal of contaminants including vent filters, bacterial filters, as well as wine filters and beer filters

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AB-002 Vent Filtration

This case study explores the essential aspects of vent filtration, focusing on system sizing considerations for tank vent filters. It also emphasizes the importance of proper air flow to protect tank contents from contaminants.

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ACS-004 - Tank Vent for Citrus Juice

This application study focuses on the use of PTFE membrane filters in a citrus juice processing plant to prevent juice spoilage.

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ACS-008 Citric Acid Plant Condensate Water

This case study details how Graver GFP 1-30P7E filters improved condensate water filtration for a citric acid plant, overcoming rust and dirt issues.

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Backwashing of Microfiltration Cartridge Elements

This technical brief discusses the backwashing of microfiltration cartridge elements, a process used to clean filters by reversing flow to remove particles and extend filter life, particularly in applications like catalyst recovery and beer and wine bottling.

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Citadel® Series

Citadel pleated membrane cartridges feature a PTFE membrane and PFA structural components to provide excellent chemical and temperature resistance for aggressive chemical applications such as etchers, strippers, cleaners and bulk chemicals.

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  • Manufactured, flushed, tested and packagedin an ISO Class 7 Cleanroom Environment
  • Filters are flushed with 18 MΩ-cm DI water toensure low extractables and low particle shedding
  • 100% integrity tested to provide reliable performance
  • Resistivity rinse-up to 18 MΩ-cm and single digitppb TOC levels with minimal throughput
  • Pore size ratings from 0.05 to 10 micronto meet a broad range of applications
  • Wet-Pack option available to eliminate the requirementfor solvent pre-wetting in aqueous applications
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Cleaning/Sanitizing Filters

This technical brief provides the Cleaning and Sanitizing Procedure for Graver Filter Products.

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End Configurations

Use this technical brief to explore Graver Technologies' wild variety of end configurations.

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Glossary of Biotech Terms

Every industry has an abundance of terms that may be used to describe products and processes. Because of the critical nature of the pharmaceutical and biotechnology markets and the fact that it is highly regulated, it is critical to define and understand some of the more common terms.

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Graver Cartridge Regeneration Procedures for Wine & Beer Applications

Explore Graver Technologies' Cartridge Regeneration Procedures for Wine & Beer Applications.

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High Flow Sizing

This technical brief contains Housing Sizing Guidelines for Graver High Flow Filter Cartridges.

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Integrity Testing: Pressure Hold

This technical brief identifies why integrity testing is crucial for membrane filters in bioburden control. Bubble point and diffusive flow are common, but Pressure Hold Test is recommended for multi-round housings.

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Membrane Role in Microbial Retention

This technical brief explores the role of membranes in microbial retention.

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Membrane Wetting

This technical brief explores Pre-Wetting Hydrophilic Membranes for Integrity Testing.

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TB-022 Deep Well Injection

This document discusses the importance of filtration in liquid processing, focusing on deep well injection sites. It emphasizes the need for effective filtration to maintain the quality of injected fluids and avoid clogging.

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TefTEC™ P Series

TefTEC™ P membrane cartridges offer complete bacterial retention and product sterility for biopharmaceutical final filtration.

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  • Singlelayer construction provides superior flow rates and minimizes filtration system size
  • 100% Flushed with 18 megohm DI water and integrity tested
  • Filters are manufactured, flushed, tested and packaged in an ISO Class 7 Cleanroom Environment
  • Each filter element stamped with pore size, lot and serial number for identification and traceability
  • Complete bacterial removal in liquid at a challenge level of 107 /cm2 Brevundimonas diminuta
  • Retentive for aerosolized virus
  • Validation guide available
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TefTEC™ Series

TefTEC™ filters have PTFE membrane & polypropylene components, offering superior hydrophobicity and cost-effective alternative to all-fluorocarbon filters.

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  • High surface area, singlelayer construction provides superior flow rates and minimizes filtration system size
  • 100% Flushed with 18 MΩcm DI water and integrity tested
  • Filters are manufactured, flushed, tested and packaged in an ISO Class 7 Cleanroom Environment
  • Each filter element stamped with pore size, lot and serial number for identification and traceability
  • Complete qualification guide available
  • Available prewet for use with aqueous based chemicals
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TefTEC™ V Series

TefTEC™ V cartridge filters are cost-effective with PTFE membrane & polypropylene support, ideal for compressed air and tank vent apps.

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  • Singlelayer construction provides superior flow rates and minimizes filtration system size
  • 100% Flushed with 18 megohm DI water and integrity tested
  • Filters are manufactured, flushed, tested and packaged in an ISO Class 7 Cleanroom Environment
  • Each filter element stamped with pore size, lot and serial number for identification and traceability
  • Demonstrated bacterial removal in air with an aerosol challenge level of 107
  • Brevundimonas diminuta/10" cartridge
  • Complete qualification guide available

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WaterTEC™ Series

The WaterTEC™ filter series is constructed of absolute rated, hydrophilic, asymmetric polyethersulfone membrane and polypropylene components.

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  • Low pressure drop reduces energy costs
  • High dirt holding capacity minimizes changeouts and down time
  • All thermal bonded construction with no adhesives
  • Available in all common configurations to allow use of existing filter housings
  • Cost effective absolute filtration
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ZTEC™ B Series

ZTEC™ B Bioburden Reduction grade membrane cartridges provide highly consistent performance for bioburden reduction and particle removal across a wide range of beverage, pharmaceutical and biological fluids.

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  • Manufactured in an ISO Class 7 Cleanroom Environment
  • 100% flushed with ultrapure DI water and integrity tested
  • Repeatably steamable/sanitizable
  • High retentions up to 107/cm2 challenged for bacteria and yeast
  • Pore size, lot and serial number are stamped on each filter element for identification and traceability
  • Complete qualification guide available
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ZTEC™ E Series

The ZTEC™ E microelectronics grade cartridges by Graver are designed for ultrapure water filtration, and are hydrophilic and free of added surfactants to avoid contamination of water streams.

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  • Manufactured, flushed, tested and packaged, in an ISO Class 7 Cleanroom Environment
  • Filters are 100% flushed with 18 MΩcm DI water and integrity tested
  • Resistivity rinse up to 18 MΩcm and single digit ppb TOC levels with minimal throughput
  • Available in a variety of end cap/adapter configurations to fit all industry standard housings
  • Pore size, lot and serial number are stamped on each filter element for identification and traceability
  • Complete qualification guide available
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ZTEC™ G Series

This pleated, disposable filter element is constructed of absolute rated, hydrophilic, asymmetric polyethersulfone membrane with extended filter area.

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  • 7.0 ft2 (0.65 m2) of membrane surface area per 10" element — High throughput, longer online service reduces costly maintenance time
  • Absolute rated membrane from 0.1 to 0.65 μm
  • Manufactured in an ISO Class 7 cleanroom environment
  • 100% flushed with 18 MΩ cm DI water and gross integrity tested
  • Fixed pore construction eliminates dirt unloading as differential pressure increases
  • Low extractables
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ZTEC™ P Series

ZTEC™ P Sterilizing Grade membrane cartridges are validated for complete bacterial retention to yield product sterility in biopharmaceutical final filtration applications.

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  • Manufactured in an ISO Class 7 Cleanroom Environment
  • 100% flushed with ultrapure DI water
  • Meets ASTM Standards for Sterility
  • Repeatably Steamable/Sanitizable
  • 100% Integrity tested prior to release
  • Pore size, lot and serial number are stamped on each filter element for identification and traceability
  • Complete validation guide available

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ZTEC™ WB Series

ZTEC™ WB cartridge filters use PES membrane to remove spoilage organisms and inorganic particulate to protect beverages.

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  • Manufactured in an ISO Class 7 Cleanroom Environment
  • 100% flushed with ultrapure DI water and integrity tested
  • Low adsorption of protein, color and flavor components
  • Steamable/sanitizable for cleaning and reuse
  • High log reduction values for spoilage organisms
  • PES membrane provides high capacity contaminant loading
  • Complete qualification guide available
  • Quick wet treatment available
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