Whatman™ 25mm Nuclepore™ Black Polycarbonate Membranes

Reduces background fluorescence in support of epifluorescence microscopy. Whatman™ 25mm Nuclepore™ Black Polycarbonate Membrane Filters improve visibility and help to distinguish microorganisms from other particulates.

Brand: Whatman™

Manufacturer Part Number: 110657

UNSPSC: 41104921

Code: 69

Additional Details:
Additional Details: Weight: 0.05000kg

Product Code. 11348994

Quantity Price
1 £ 92.2 / Pack of 100
Estimated Shipment
Add to basket

Description and Specification


Pore Size 0.4μm
Material Polycarbonate
Diameter (Metric) Outer 25mm
Color Black
For Use With (Application) Epifluorescence technique, potable ultrapure water food and dairy wine and clinical electronics

  • Smooth, gridded polycarbonate track-etched (PCTE) membrane surface efficiently supports microorganism enumeration in a standard plate count
  • Extremely low nonspecific absorption 
  • Rapid standard plate count results
  • Compatible with the direct epifluorescent microscopy filter technique (DEFT), which allows microorganisms to be counted directly on a filter
  • DEFT can be conducted in under half an hour, sidestepping the standard > 24 hour process of incubating a microbial sample
  • Microscopic membrane filters are made by track-etching (polycarbonate is bombarded with radiation and chemically treated to create sharp, uniform filter pores)
  • Designed to trap microbes efficiently; more effective than other filter media for certain microorganisms


Technical documents