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Fisherbrand™ Quantitative Grade Filter Paper Circles
Manufactured to reduce silicon dioxide, calcium oxide and ferric oxide levels
Description
Manufactured to reduce silicon dioxide, calcium oxide and ferric oxide levels
- Made from high-quality alpha cotton cellulose, washed in hydrochloric acid and neutralized in an ultrapure water rinse
- Leave no more than 0.01% ash when burned
- Limited wet strength, suitable for gravity or low-suction filtration; should be used with care to avoid rupturing
Order Info
Packed 100 circles to a box and shrink-wrapped for purity and cleanliness.
Compliance
All papers listed in chart meet ASTM™ requirements for “ash content per circle.”
Specifications
| Disc | |
| 1 to 5 μm | |
| Excellent retention. Suitable for finest precipitates such as metastannic acid, barium sulfate, mercuric chromate, strontium sulfate. Used primarily for gravimetric and inorganic analyses, collecting precipitates that tend toward colloidal dispersions. Limited wet strength. | |
| Fine | |
| 12.5 cm |
| Alpha Cotton Cellulose | |
| Slow | |
| Q2 | |
| 100/box |