Matched-weight Filters
Matched-weight filters are often chosen when using gravimetric analysis
to analyze a sample because no filter preweighing or conditioning is needed.
Therefore, gravimetric determinations can be made faster and with greater
accuracy. Matched-weight refers to two filters that are matched in weight
and loaded into a cassette in a strictly-controlled lab environment of 68
F (± 0.5 F) temperature and 50 % (± 0.5%) humidity. The top
filter collects contaminants and the bottom filter serves as a control. After
sampling, both filters are removed and weighed individually; the difference
between weights is the sample weight.
Matched Weight Filters
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All SKC preloaded filters include supports and are in SureSeal leak-free
cassettes
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Ordering Information
Diameter
(mm) |
Cassette Description |
Filter Specifications |
Matched-weight |
Cat. No. |
Qty. |
| 25mm |
2-piece clear polystyrene |
0.8 µm MCE |
within
50 µg |
225-525 |
50 |
| 37mm |
3-piece clear plastic |
0.8 µm MCE |
within
100 µg |
225-3-02 |
50 |
| 37mm |
2-piece clear plastic |
0.8 µm MCE |
within
50 µg |
225-502 |
50 |
| 37mm |
3-piece clear plastic |
0.8 µm MCE |
within
50 µg |
225-503 |
50 |
| 37mm |
2-piece polystyrene |
0.8 µm MCE |
within
50 µg |
225-527 |
12 |
| 37mm |
3-piece polystyrene |
0.8 µm MCE |
within
50 µg |
225-528 |
12 |
| 37mm |
none, filter pairs only
|
5.0 µm PH-PVC, GLA-5000 |
within
25 µg |
225-8222 |
50 pr. |
| 37mm |
2-piece clear plastic |
5.0 µm PH-PVC, GLA-5000 |
within
25 µg |
225-8201 |
50 |
| 37mm |
3-piece clear plastic |
5.0 µm PH-PVC, GLA-5000 |
within
25 µg |
225-8202 |
50 |
| 47mm |
none, filter pairs only |
0.8 µm MCE |
within
50 µg |
225-531 |
50 |
Matched Weight Filter FAQs
Recommendations
for Post Sample Weighing Matched-weight Cassettes (PDF)
Filter/Cassette Solvent Compatibility Chart (HTML)
Filter/Cassette
Solvent Compatibility Chart (PDF)
Custom Filters Available
For specific applications, SKC will manufacture filters to meet your specific
requirements. Download the Custom Filter Order Form in PDF format. Complete
the form and fax it to your SKC
representative or contact your SKC
representative or call the SKC Sales Department at 724-941-9701 for more
information.
This page was last modified January 21, 2009
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