Filtros de membrana

 

 

Mixed Cellulose Esters (MCE)

Composition: Mixed cellulose esters includes cellulose nitrate, also known as

nitrocellulose, and cellulose acetate

Autoclavable: withstands autoclaving temperatures up to 130ºC without adversely

affecting bubble point, flow rate or microbiological recovery.

Applications:

• standard membranes for many laboratory applications, including filter sterilizing
• 
  
•  biologocal fluids, microbiology, contamination analysis and air monitoring

• can be transparentized to view collected particles - using compatible liquid
• 
  
•  (immersion oil, toluene) or  select Opticler membranes for the "hot block"
• 
  
•  acetone vapor method

• gridded filters available for quntifying microbial growth

• available non-sterile or sterilized by ethylene oxide (ETO

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Cellulose Acetate (CA)

 Composition: mixture of cellolose triacetate and diacetate

Sterilizable: may be repeated sterilized without loss of integrity or change in bubble

point

Applications:

• enhanced recovery of fastidious gram positive organisms

• filtration of enzyme solutions

• diagnostic cytology

• receptor binding studies
• 
  

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Coated cellulose acetate

Composition: cellulose acetate cast onto a non-woven polyester support

Applications:

• use as a clarifying filter or prefilter

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Hydrophilic PTFE

Characteristics: maximum chemical and pH resistance

Non-supported

Applications:

• ideal for HPLC and other mixtures of aqueous and organic solvents

Note: autoclaving or allowing membrane to dry will render it hydrophobic

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Hydrophobic PTFE, supported

Applications:

• sterilize gases: traps aqueous aerosols

• air and gas venting: allows gases to pass freely while blocking aqueous liquids,
• 
  
•  
• protect vaccum pumps and critical samples

• sterilize and clarify strong acids and many other solvents incompatible with
• 
  
• 
  
•  othermembrane types

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Hydrophobic PTFE, unsupported

Properties: thin, highly porous, behaves as an absolute retentive membrane

Applications:

• sterilize gases. traps aqueous aerosols

• air and gas venting: allows gases to pass freely while blocking aqueous liquids,
• 
  
•  protect vaccum pumps and critical samples

• sterilize and clarify strong acids and many other solvents incompatible with
• 
  
•  other membranes

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Polycarbonate

Characteristics: low non-specific binding and optically translucent, extremely uniform,

cylindrical pores

Applications:

• Epifluorescence microscopy: available in black for this method

• Electron microscopy: smooth surface is ideal for observing captured particles

• Light microscopy: easily transparentized for optical illumination

• Beverage and sterility testing

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Anexo	Tamanho
Catálogo Filtros de Membrana - Bioline Lda.pdf	1.25 MB