All Photos(3)




Milliflex Oasis® Filtration Unit

0.45 μm MCE white membrane with 100 mL funnel

Sign Into View Organizational & Contract Pricing

Sterile membrane filtration device made of gridded, mixed cellulose esters membrane for bioburden testing


gridded white mixed cellulose esters (MCE) filter
styrene-butadiene device

Quality Level


electron beam irradiated


pack of 24


Milliflex Oasis®


100 mL sample volume


100 mL

filter diam.

49 mm


100 mL

pore size

0.45 μm pore size


bioburden testing
water monitoring

Looking for similar products? Visit Product Comparison Guide

General description

MILLIFLEX OASIS® 100 mL funnel is a ready-to-use, sterile filter unit that combine a funnel and a gridded membrane filter in a single device offering a complete solution for bioburden testing. The filter unit is made of Styrene butadiene copolymer and the membrane is made of mixed cellulose esters with 0.45 μm pore size, white gridded and 49mm diameter. The sealed integral membrane filter eliminates the need for membrane manipulation and handling, thus minimizing a major source of contamination and thereby improves bioburden testing reliability. The sealed membrane prevents the bypass phenomenon often found with other filtration systems. The MILLIFLEX OASIS® membrane filter possesses almost twice the surface area of standard membranes enabling faster filtration and the funnel can be easily detached from the membrane without the use of any tools. The convex shape of the membrane after filtration demonstrates the integrity of the membrane and prevents air bubbles from being trapped when placed on culture media.


MILLIFLEX OASIS® 100 mL funnel find its application in Bioburden testing, water monitoring and general microbiological analysis of beer, bottled water. They are widely used in pharmaceutical and cosmetic industry

Legal Information

MILLIFLEX is a registered trademark of Merck KGaA, Darmstadt, Germany
MILLIFLEX OASIS is a registered 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

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