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Filtration media - Filtration - Sample preparation - Chromservis.cz

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C

CA Filters

Cellulose Acetate(CA)CA Filters

  • Composition: Mixture of triacetate and diacetate
  • Characteristics:Low static charge and high strhgth
  • Sterilizable: May be repeatedly sterilized without loss of integrity or change in bubble point
  • Clean: 0.1 wt% aqueous extractables
  • Related to MCE membranes: - improved solvend resistance to low molecular weight alcohols - better heat resistance - lower protein binding
    Specifications for Cellulose Acetate (CA)
    ore Size [µm Bubble Point [MPa] Flow rate (Water)[ml/min/cm2] Flow rate (Air) [L/min/cm2] Porosity [%] Thickness [µm]
    0.20 ≥0.25 16 2 66 125
    0.45 ≥0.17 35 4 68 125
    0.80 ≥0.068 160 14 72 125
    3.00 ≥0.034 500 54 78 135

 

 

 

Specifications for CE
Pore Size [µm] Color Surface Bubble Point [MPa] Flow rate (Water)[ml/min/cm2] Flow rate (Air) [L/min/cm2] Porosity [%] Thickness [µm]
0.10 White Plain ≥0.24 2.7 0.67 65 110
0.20 White Plain ≥0.37 17.5 2.4 73 133
0.30 White Plain ≥0.28 30 3.7 75 114
0.45 White Plain ≥0.24 45 5.0 78 145
0.45 White Grid ≥0.16 80 8.0 79 142
0.65 White Plain ≥0.14 120 11.2 79 150
0.80 White Plain ≥0.11 165 15.0 80 150
1.00 White Plain ≥0.096 220 20.4 80 150
3.00 White Plain ≥0.070 300 28.3 81 155
5.00 White Plain ≥0.058 400 40.9 81 160
0.45 Black Grid ≥0.22 50 5.0 78 135
0.80 Black Grid ≥0.10 170 15.0 80 145
0.45 Green Grid ≥0.22 50 5.0 78 135
0.80 Green Grid ≥0.10 170 15.0 80 145

 

 

Ash Content of White Plain MCE Membrane Filters (ppm)
           
Al <0.2 K 6.0 Ni <5.0
Ca 140.0 Li <1.0 Pb <1.0
Cd <0.5 Mg 10.0 Si <20.0
Cr 8.0 Mn <0.5 Sn <5.0
Cu <1.0 Mo <1.0 Ti <1.0
Fe <5.0 Na 10.0 Zn <1.0

M

MCE Filters

Mixed Cellulose Esters (MCE)MCE Filters

  • Composition: Mixed cellulose esters includes cellulose nitrate, also known as nitrocellulose, and cellulose acetate
  • High porosity: Provide superior flow rates
  • High protein binding: Can be blocked by pretreatment or utilized in applications
  • High purity: Triton-free and non reactive to pyrogens
  • Autoclavable: Withstand autoclaving temperatures up to 130 C without adversely affecting bubble point rate or microbiological recovery
  • Rapid wetting time: <3 seconds to wet a 47 diameter disc with aqueous 1% methylene blue

 

Specifications for MCE
Pore Size [µm] Color Surface Bubble Point [MPa] Flow rate (Water)[ml/min/cm2] Flow rate (Air) [L/min/cm2] Porosity [%] Thickness [µm]
0.10 White Plain ≥0.24 2.7 0.67 65 110
0.20 White Plain ≥0.37 17.5 2.4 73 133
0.30 White Plain ≥0.28 30 3.7 75 114
0.45 White Plain ≥0.24 45 5.0 78 145
0.45 White Grid ≥0.16 80 8.0 79 142
0.65 White Plain ≥0.14 120 11.2 79 150
0.80 White Plain ≥0.11 165 15.0 80 150
1.00 White Plain ≥0.096 220 20.4 80 150
3.00 White Plain ≥0.070 300 28.3 81 155
5.00 White Plain ≥0.058 400 40.9 81 160
0.45 Black Grid ≥0.22 50 5.0 78 135
0.80 Black Grid ≥0.10 170 15.0 80 145
0.45 Green Grid ≥0.22 50 5.0 78 135
0.80 Green Grid ≥0.10 170 15.0 80 145

 

 

Ash Content of White Plain MCE Membrane Filters (ppm)
           
Al <0.2 K 6.0 Ni <5.0
Ca 140.0 Li <1.0 Pb <1.0
Cd <0.5 Mg 10.0 Si <20.0
Cr 8.0 Mn <0.5 Sn <5.0
Cu <1.0 Mo <1.0 Ti <1.0
Fe <5.0 Na 10.0 Zn <1.0

S

Sample preparation introduction

Sample preparation

 

In sample preparation, there are many techniques used for sample handling, preparation and storage prior the analysis. Main techniques used in this area are:

Many samples or laboratory techniques require cooling or heating. That is why folowing instruments are used:

You will find sample preparation products in our catalogue.

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