MEMBRANE FILTERS

New

Membrane filtration offer a very convenient , fast and economical separation method.

They offer below mentioned advantages ;

_ Excellent level of paticle retention

_ Large load carry capacity

_ High permeability to air

_ Non-hygroscopic and biologically inert

_ Chemical resistance to most solvents and reagents.

_ Very high temperature resistance

Alternative 2 products;  filters with 0,45 µm pore size,  Filters with 0,20 µm pore size

CM : cellulose mixed ester membrane

Particularly suitable for aqueous solutions. They are  hydrophilic. Thermally stable to 125°C.  Ideal for gravimetric analysis and are often used for contamination tests.

NC : nitrocellulose membranes

They are easily wettable and suited for filtration of aqueous solutions. In dry athmosphere these membranes are thermally stable at 125°C and can be autoclaved at 121°C.

RC : regenerated cellulose membranes

These membranes are resistant to most organic solvents. They are mostly used for filtration of solvent mixtures and ultra-purification and degassing of HPLC eluents.

PTFE : polytetrafluoroethylene membranes

Particularly suitable with aggressive media, as well as to concentrated acids and bases. They are hydrophobic, They can be used up to 145°C.

PE : polyester membranes

They are hydrophibic. Particularly suitable for fine titration, dust analysis, aerrosol analysis and ultra-purification of solvents.

CA : cellulose acetate membranes

They have a low protein binding capacity and they are suited for aqueous and alcoholic media. They are hydrophibic and can be used for hot gases up to 180°C.  

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