All Photos(2)




PTFE Membrane Filter, 0.45 μm Pore Size

Omnipore, filter diam. 47 mm, hydrophilic

Sign Into View Organizational & Contract Pricing

Hydrophilic PTFE membrane filter discs, Hydrophilic Polytetrafluoroethylene membrane filter, Omnipore Membrane Filter


PTFE membrane
plain filter
white filter

Quality Level








130 °C max. temp.

filter diam.

47 mm


65 μm

pore size

0.45 μm pore size
80 % porosity

shipped in


Looking for similar products? Visit Product Comparison Guide

General description

Filter Code: JHWP
Filter Type: Screen filter
Our Fluoropore® membrane is a hydrophobic, polytetrafluoroethylene (PTFE) polymer membrane bonded to a high density polyethylene support to improve the handling characteristics of the filter for normal applications. Fluoropore membranes provide broad chemical compatibility, high flow rates and consistency. (Please note that catalogue numbers containing "FHUP" are unlaminated, or produced without a backing.)

Our Omnipore membrane is a hydrophilic PTFE membrane that is compatible with virually all solvents, acids, and alkaline solutions.

Features & Benefits:
- Biologically and chemically inert
- High porosity yields high flow rates
- Hydrophobic and hydrophilic PTFE varieties available for filtration of aqueous and organic-based samples

- Fluoropore Membrane: Clarifying Acids, Bases and Solvents; Air Monitoring; Filtering and Venting Gases; UV Spectroscopy

- Omnipore Membrane: Filtration of Aqueous Solutions, Clarifying Acids and Alkaline Solution


  • Filtration of aqueous solutions
  • Clarifying acidic and alkaline solutions
  • HPLC, UPLC, LC-MS/MS mobile phase filtration
  • Microplastics analysis

Legal Information

Fluoropore is a registered trademark of Merck KGaA, Darmstadt, Germany
Omnipore is a trademark of Merck KGaA, Darmstadt, Germany

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

Already Own This Product?

Documents related to the products that you have purchased in the past have been gathered in the Document Library for your convenience.

Visit the Document Library

Difficulty Finding Your Product Or Lot/Batch Number?

Product numbers are combined with Pack Sizes/Quantity when displayed on the website (example: T1503-25G). Please make sure you enter ONLY the product number in the Product Number field (example: T1503).


Product Number
Pack Size/Quantity

Additional examples:





enter as 1.000309185)

Having trouble? Feel free to contact Technical Service for assistance.

Lot and Batch Numbers can be found on a product's label following the words 'Lot' or 'Batch'.

Aldrich Products

  • For a lot number such as TO09019TO, enter it as 09019TO (without the first two letters 'TO').

  • For a lot number with a filling-code such as 05427ES-021, enter it as 05427ES (without the filling-code '-021').

  • For a lot number with a filling-code such as STBB0728K9, enter it as STBB0728 without the filling-code 'K9'.

Not Finding What You Are Looking For?

In some cases, a COA may not be available online. If your search was unable to find the COA you can request one.

Request COA

Abayomi Babatunde Alayande et al.
Materials science & engineering. C, Materials for biological applications, 109, 110596-110596 (2020-04-02)
The antimicrobial properties of two-dimensional materials such as graphene-based surfaces are vital for environmental and biomedical applications. Here, the improvement of the antibacterial property of reduced graphene oxide by the preparation of rGO-CuO nanocomposite films was reported. The rGO-CuO nanocomposites
Minsoo Kim et al.
Materials (Basel, Switzerland), 12(23) (2019-11-27)
Superabsorbent polymer (SAP) is attracting attention as a water-entraining admixture that reduces shrinkage or heals cracks in concrete. Cross-linked sodium polyacrylate SAPs, which are the most widely produced SAPs in the global market, are applicable as concrete admixtures. However, there

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service