Description
| CROSS REFERENCE GRADES | |||||
|---|---|---|---|---|---|
| Filtration speed | CHM | WHATMAN | S&S | M&N | SARTORIUS |
| VERY FAST | F1004 | 4 | 604 | 617 | 288 |
| FAST | F1007 | -- | 597 | -- | 289 |
| MEDIUM | F1001 | 1 | 593 | 615 | 292 |
| MEDIUM-SLOW | F1002 | 2 | -- | 616md | 292a |
| SLOW | F1006 | 6 | 602h | 619eh | 290 |
| VERY SLOW | F1005 | 5 | 602eh | 619 | 293 |
APPLICATION EXAMPLES
Very Fast Filtration
- Ideal for filtering coarse, flocculent, and bulky precipitates
- Used for hydroxides of iron, aluminum, and chromium
- Effective in sulfides of copper, bismuth, cobalt, and iron
- Suitable for various organic metal precipitates
- Applied in the determination of silicon in steel and pig iron analysis
Fast Filtration
- Commonly used in analytical work
- Filters sulfides of silver, arsenic, antimony, cadmium, lead, iron, and magnesium
- Used in lead chromate, ammonium molybdate, and alkaline earth carbonate filtration
- Suitable for routine laboratory separations
- Provides moderate particle retention with high flow rates
Medium Filtration
- Allows fast filtration of fine precipitates
- Used for calcium oxalate and magnesium ammonium phosphate separations
- Suitable for coarser forms of barium sulfate
- Frequently applied in routine qualitative laboratory tests
- Balances flow rate and particle retention
Medium-Slow Filtration
- Filters fine precipitates such as lead dioxide, calcium fluoride, nickel sulfide, and zinc sulfide
- Ensures efficient separation of fine particles
- Maintains a controlled filtration rate
- Used in routine and industrial applications
- Preferred for laboratory processes requiring moderate filtration speed
Slow Filtration
- Designed for precise separation of fine precipitates
- Used for cold-precipitated barium sulfate and metastannic acid
- Ensures minimal sample loss
- Frequently applied in gravimetric analysis and sample preparation
- Ideal for samples requiring extended filtration time
Very Slow Filtration
- Used for ultra-fine particle filtration
- Filters fine-grained precipitates such as cold-precipitated barium sulfate and metastannic acid
- Ensures high-precision laboratory analyses
- Preferred in critical pharmaceutical and chemical applications
- Provides maximum particle retention for demanding procedures
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