How to Determine Which Side of an Asymmetric Millipore™ Membrane Faces Up

Have you ever had difficulty trying to determine which side of your Millipore™ asymmetric membrane faces up? We explore the subtle differences in the differences in the entry pores of our Millipore™ membranes - and demonstrate the difference between the white discs and blue discs provided in a box of Millipore™ membrane filters.
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