Membrane Circles, Cellulose Nitrate

Membrane Circles, Cellulose Nitrate

Product Details:


Price And Quantity

  • 6210 INR
  • 1 Pack

Trade Information

  • Udaipur
  • Cheque, Cash in Advance (CID), Cash Advance (CA)
  • 100 Pack Unit Per Month
  • 15 Days
  • All India

Product Description

Membrane Circles, Cellulose Nitrate

Narrow pore size distribution for improved surface capture and analysis.

Low levels of extractable to ensure sample integrity.

Recommended for the majority of routine applications, this membrane is manufactured under strictly controlled conditions. The user will benefit from the performance improvements that are now available in Whatman membrane filters, including very narrow pore size distribution and low levels of extractables.

Higher strength and flexibility

Most membranes are inherently brittle and difficult to handle; it is not uncommon for filters to be damaged during loading into holders or while in use. Whatman cellulose nitrate membrane filters have a noticeably improved flexibility and are made to tolerate abuse during handling, loading, and autoclaving without sacrificing integrity. These membranes are among the strongest of their type available, as measured and compared by burst pressure tests.

Low extractable levels

The level of extractable in membrane filters has become more important with advances in filtration or adsorption techniques. In particular, pharmaceutical, immunological, and biomedical tissue culture and trace analysis applications can be adversely affected by high extractable levels. Whatman cellulose nitrate membrane filters have a low level of extractable, generally below that of other membranes of a similar type.

Narrow pore size distribution

One of the major features of Whatman membrane filters is the narrow distribution of pore sizes. The rated pore size of these membranes is closely controlled due to the advanced manufacturing and control system. Additionally, the batch-to-batch variation is minimized providing more consistent laboratory results.

Increased temperature stability

Membrane filters are normally autoclaved at 121C without loss of integrity. Cellulose nitrate membranes are supplied as circles, sheets, or reels.

Reduced shrinkage

Excessive shrinkage can cause problems during autoclaving and is often the cause of membranes tearing in their holders after autoclaving. It may also cause a reduction in flow rate and total throughput. Whatman membranes exhibit a low shrinkage during autoclaving.

White plain filters

This is the standard membrane filter for the majority of laboratory applications involving particles and cells in the range of 0.1 micro-m to 12.0 micro-m. The residue after filtration is found to be almost completely on the surface of the membrane and allows physical recovery of deposits and microscopic examination.

Product Specification:


Cellulose Nitrate Membrane Circle, plain, 0.8 micro-m pore size, 47 mm


Sample preparation Microbiological studies Filtration of aqueous solutions





Field of Application

Asbestos monitoring (NIOSH) (Air pollution monitoring)






Cellulose Nitrate

Membrane Type


Operating temp. max.

80 C

Pore Size

0.8 micro-m

Porosity Max.


Porosity Min.




Weight Max.

5.5 mg/cm2

Weight Min.

3.6 mg/cm2


47 mm

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