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Whatman™ Quantitative Filter Paper: Grade 40 Circles
Supports accurate analysis in applications sensitive to very low levels of background contamination. Whatman™ Quantitative Filter Paper: Grade 40 Circles are additionally useful in gravimetric analysis where ash content might affect weight measurements of combusted samples.
$39.04 - $669.50
Specifications
| Material | High-quality Cotton Linters |
|---|---|
| Format | Circle |
| Grade | 40 |
| Pore Size (Metric) | 8μm |
| Porosity | Medium |
| Catalog Number | Mfr. No. | Diameter (Metric) | Price | Quantity | |||||
|---|---|---|---|---|---|---|---|---|---|
| Catalog Number | Mfr. No. | Diameter (Metric) | Price | Quantity | |||||
| 09-845A Accessories |
Whatman™
1440055 |
55mm |
Pack of 100 Each for $53.60
|
|
09-845B Accessories |
Whatman™
1440070 |
70mm |
Pack of 100 Each for $55.77
|
|
09-845C Accessories |
Whatman™
1440090 |
90mm |
Pack of 100 Each for $77.56
|
|
09-845D Accessories |
Whatman™
1440110 |
110mm |
Pack of 100 Each for $92.02
|
|
09-845G Accessories |
Whatman™
1440185 |
185mm |
Pack of 100 Each for $204.38
|
|
09-845F Accessories |
Whatman™
1440150 |
150mm |
Pack of 100 Each for $138.35
|
|
09-845E Accessories |
Whatman™
1440125 |
125mm |
Pack of 100 Each for $104.33
|
|
09-845K Accessories |
Whatman™
1440240 |
240mm |
Pack of 100 Each for $323.63
|
|
09-845M Accessories |
Whatman™
1440320 |
320mm |
Pack of 100 Each for $669.50
|
|
09-845H Accessories |
Whatman™
WHT1440042 |
42.5mm |
Pack of 100 Each for $48.52
|
|
09-845J Accessories |
Whatman™
1440329 |
30mm |
Pack of 100 Each for $39.04
|
|
09-800-969 |
Whatman™
1440047 |
47mm |
Pack for $50.60
|
|
Description
Ashless grades are very pure filters suitable for a wide range of critical analytical filtration procedures. Whatman™ quantitative filter papers are designed for gravimetric analysis and the preparation of samples for instrumental analysis.- High-purity filters for quantitative analysis
- Contain 0.007% maximum ash content
- Medium nominal particle retention rating of 8µm
- Medium filtration speed (Herzberg 340 sec.)
Suited for
- Soil analysis, when separating solid matter from aqueous extracts
- Quantitative determination of milk sediment
- Use as a clean-up filter for solutions prior to atomic absorption (AA) spectrometry
- Analysis of constituent components in cements, clays, iron, and steel products
- Collection of trace elements and radionuclides from the atmosphere
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Specifications
| High-quality Cotton Linters | |
| 40 | |
| Medium | |
| 210μm |
| Circle | |
| 8μm | |
| Medium |