CELLULOSE NITRATE MEMBRANE FILTERS FOR THE DISPENSADER


DESCRIPTION

    

Membrane suitable for the use in the dispenser, sterile-sealed, without protective paper on top of each filter.
  • Made of cellulose nitrate.
  • Hydrophilic.
  • Very high flow rate.
  • High non-specific adsorption.
  • Resistant to aqueous solutions pH 4-8, hydrocarbons and some dilute solvents.
  • Uniform pore structure which ensures homogeneous distribution of the particles retained on the filter surface.
  • No enhancement or inhibition by the grid lines, due to chemical extractable or by the sterilization process.
  • Multi-fit: Fits into other dispensers.
  • Free of protective paper.
  • Packaged on a special pleated band.
  • Product data are printed on.
  • High Flow membranes available.
  • White, green or black, gridded.
  • Pore size from 0.20 um to 1.2 um.
  • Gamma irradiated , 25 kGray.


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TECHNICAL SPECIFICATIONS

Material Cellulose Nitrate
Pore Size
0.2 µm
0.45 µm
0.45 µm high flow
0.65 µm
0.8 µm
1.2 µm
Water flow rate (1) (ml/min)
20
70
100
130
200
320
Retention of coliforms (%)
100
100
100
n.a.
n.a.
n.a.
Recovery rate (2) (%)
>90
>90
>90
>90
>90
>90

 

(1) Acc. DIN 58355: average value per cm² area at Ap = 1 bar
(2) Acc. ISO 7704
(3) n.a = not analyzed

  • Adsorption :160 µg/cm² for γ-globulin and pore 0.2 µm (decreases with increasing pore size)
  • Extractables with water less than 1%
  • Sterilization: by autoclaving at 121 ºC, γ-radiation (25 kGy) or with ethylene oxide
  • Maximum temperature 130ºC

 

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APPLICATIONS

  • Microbiological analysis of water, drug products, drinks, etc.
  • For counts of colonies of microorganism.
  • For counts of fungi and yeasts.

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ORDERING INFO

Pore ( µm) Φ (mm) colour / Grid
Code
0.2 47 white / black
NCSD02047BC
0.2 50 white / black
NCSD02050BC
0.45 high flow 47 white / black
NCSD045HF47BC
0.45 high flow 50 white / black
NCSD045HF50BC
0.45 high flow 47 white / green
NCSD045HF47VC
0.45 47 white / black
NCSD04547BC
0.45 50 white / black
NCSD04550BC
0.45 47 white / green
NCSD04547VC
0.45 50 white / green
NCSD04550VC
0.45 47 green / dark green
NCSD04547VVC
0.45 50 green / dark green
NCSD04550VVC
0.45 47 black / white
NCSD04547NC
0.45 50 black / white
NCSD04550NC
0.65 47 black / white
NCSD06547NC
0.65 50 black / white
NCSD06550NC
0.80 47 black / white
NCSD08047NC
0.80 50 black / white
NCSD08050NC
1.2 47 white / black
NCSD12047NC
1.2 50 white / black
NCSD12050NC


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