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VCTP02500 Millipore

Isopore Membrane Filter

0.1 µm pore size, hydrophilic polycarbonate membrane, 25 mm diameter

  •  eCl@ss 32031602

  •  NACRES NB.24



Related Categories Filtration Supplies, Labware, Membrane Filters, Polycarbonate Membrane Filters
material   plain filter
  polycarbonate membrane
  white filter
Agency/Method   in accordance with ASTM® D5755
feature   hydrophilic
mfr. no.   Isopore
parameter   0.000367 L/min-cm2-psi air flow rate
  0.13 mL/min-cm2-psi water flow rate (maximum flow rate per 1.0 psi)
  140 °C max. temp.
  ~2.5 mL/min-cm2 water flow rate at 10 psi (typical results)
filter diam.   25 mm
thickness   25 μm
gravimetric extractables   <1%
refractive index   n/D 1.6
matrix   Isopore
pore size   0.1 μm pore size
  4.18 % porosity
bubble point   ≥7.0 bar, air with water at 23 °C
shipped in   ambient


General description

Filter Code: VCTP

Filter Type: Screen filter

The Isopore membrane is a polycarbonate, track-etched screen filter recommended for all analyses in which the sample is viewed on the surface of the membrane. Isopore membrane offers distinct advantages for the analysis of airborne contaminants and other particles using optical or electron microscopy. The Isopore membrane is composed of polycarbonate film, which has a smooth, glass-like surface for clearer sample observation. The unique manufacturing process of the membrane ensures a precise pore diameter and a consistent pore size for accurate separation of samples by size. Matched-weight filters are not usually required because of low, constant tar and ash weights.

Features & Benefits:
•Membrane structure retains particles on the surface, simplifying counting and analysis
•Isopore membranes do not stain, resulting in low background interference
•Non-hygroscopic, allowing for rapid drying and reduced sample analysis time
•Translucent material does not require clearing for transmitted light microscopy; also available in brown variety

Air Monitoring, Epifluorescent Microscopy, Chemotaxis Assays


0.1 µm pore size, hydrophilic polycarbonate membrane, 25 mm diameter

Product Filters Out: Asbestos Particle Count


Possible reduction in flow rates may occur after autoclaving.

Legal Information

ASTM is a registered trademark of American Society for Testing and Materials

ISOPORE is a trademark of Merck KGaA, Darmstadt, Germany

Safety & Documentation

Safety Information

Flash Point(F) 
Not applicable
Flash Point(C) 
Not applicable
Protocols & Articles


Isopore™ polycarbonate membrane filters

Used frequently in particle analysis by optical or electron microscopy, Isopore™ polycarbonate membrane filters offer well-defined pores and a smooth, transparent surface ideal for use with optical o...
Keywords: Air Monitoring, Fractionation, Microscopy, Scanning electron microscopy, Solvents

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