อุปกรณ์กรอง Syringe Filter CHROMAFIL CA
| CHROMAFIL® CA |
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| Syringe filters with membrane of cellulose acetate |
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| Sterile and nonsterile packages available |
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Features |
- Hydrophilic membrane
For filtration of water-soluble oligomers and polymers, especially suited for biological macromolecules
Very high shape stability in aqueous solutions
Extremely low binding capacity for proteins (21 µg per 25 mm filter)
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Ordering information · CHROMAFIL® Xtra
Cellulose acetate syringe filters labeled for method validation and certification
| Type |
Pore size |
Membrane |
|
Standard pack |
BIG-BOX |
| |
[µm] |
dia. [mm] |
|
Filters/pack |
REF |
Filters/pack |
REF |
| CA-20/25 |
0.20 |
25 |
labeled |
100 |
729226 |
400 |
729226.400 |
| CA-45/25 |
0.45 |
25 |
labeled |
100 |
729227 |
400 |
729227.400 |
| |
Ordering information · CHROMAFIL®
Color-coded cellulose acetate syringe filters
| Type |
Pore size |
Membrane |
Color code |
Standard pack |
BIG-BOX |
| |
[µm] |
dia. [mm] |
top |
bottom |
Filters/pack |
REF |
Filters/pack |
REF |
| CA-20/15 MS |
0.20 |
15 |
yellow |
red |
100 |
729054 |
800 |
729054.800 |
| CA-45/15 MS |
0.45 |
15 |
colorless |
red |
100 |
729055 |
800 |
729055.800 |
| CA-20/25 |
0.20 |
25 |
yellow |
red |
100 |
729026 |
400 |
729026.400 |
| CA-45/25 |
0.45 |
25 |
colorless |
red |
100 |
729027 |
400 |
729027.400 |
| Sterile filters |
| CA-20/15 MS (S) |
0.20 |
15 |
yellow |
red |
50 |
729052 |
|
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| CA-45/15 MS (S) |
0.45 |
15 |
colorless |
red |
50 |
729053 |
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| CA-20/25 (S) |
0.20 |
25 |
yellow |
red |
50 |
729024 |
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| CA-45/25 (S) |
0.45 |
25 |
colorless |
red |
50 |
729025 |
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| MS = minispike on filter exit, S = sterile filter |
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CHROMAFIL® filter membranes |
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| Chemical compatibility of filter materials |
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| The following table lists the chemical compatibility of our CHROMAFIL® materials. The chemical compatibility depends on several parameters such as time, pressure, temperature and concentration. In most cases, CHROMAFIL® filters will have only short contact with a solvent. |
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In these cases they may be used despite of limited compatibility.
For example, a PTFE filter with PP housing does not liberate any UV-detectable substances during filtration of 5 mL THF, although PP shows only limited resistance towards THF. |
| Solvent |
Material |
| |
MV |
CA |
RC |
PA |
PTFE |
H-PTFE |
PVDF |
PES |
PET |
GF |
PP |
| Acetaldehyde |
– |
– |
 |
o |
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o |
| Acetic acid, 100 % |
– |
– |
– |
– |
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| Acetone |
– |
– |
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– |
– |
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| Acetonitrile |
– |
– |
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| Ammonia, 25 % |
– |
– |
o |
– |
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o |
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| Benzene |
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o |
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o |
| n-Butanol |
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|
o |
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| Cyclohexane |
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|
o |
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| Dichloromethane |
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– |
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– |
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– |
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– |
| Diethyl ether |
o |
o |
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|
o |
| Dimethylformamide |
– |
– |
o |
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– |
– |
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| 1,4-Dioxane |
– |
– |
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|
o |
– |
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|
o |
| Ethanol |
– |
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| Ethyl acetate |
– |
– |
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|
o |
| Ethylene glycol |
o |
o |
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| Formic acid, 100 % |
|
– |
o |
– |
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|
o |
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| Hydrochloric acid, 30 % |
– |
– |
– |
– |
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– |
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| Methanol |
– |
– |
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| Nitric acid, 65 % |
– |
– |
– |
– |
o |
o |
o |
|
o |
|
– |
| Oxalic acid, 10 % aqueous |
|
– |
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