Grade 42 Ashless Filter Paper for Instrumental Analysis, Circle
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$31.91
100
/ Pack
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Description
Our high-purity Whatman ashless Grade 42 quantitative filter papers are suitable for a wide range of critical analytical filtration procedures for quantitative analysis. Grade 42 filter papers have the finest retention of all Whatman ashless filter paper grades. Grade 42 is designed for gravimetric analysis and sample preparation for instrumental analysis.
Whatman Grade 42 quantitative papers from Cytiva business are designed for the retention of extremely small particles. A common example is the use of Grade 42 as a calcium carbonate filter for analysis in the cement industry.
Features
- 0.007% ash maximum.
- Fine (2.5 μm) nominal particle retention rating, eliminate large particles that might otherwise interfere with sensitive instrumentation.
- Herzberg filtration speed of 1870 s.
- Commonly used as a calcium carbonate filter.
- Particularly suitable for gravimetric analysis.
Product Specifications
| Manufacturer Part 1442-042: | Diameter 42.5 mm |
|---|---|
| Manufacturer Part 1442-047: | Diameter 47 mm |
| Manufacturer Part 1442-055: | Diameter 55 mm |
| Manufacturer Part 1442-070: | Diameter 70 mm |
| Manufacturer Part 1442-090: | Diameter 90 mm |
| Manufacturer Part 1442-110: | Diameter 110 mm |
| Manufacturer Part 1442-125: | Diameter 125 mm |
| Manufacturer Part 1442-150: | Diameter 150 mm |
| Manufacturer Part 1442-185: | Diameter 185 mm |
| Manufacturer Part 1442-240: | Diameter 240 mm |
| Manufacturer Part 1442-320: | Diameter 320 mm |
| Grade: | 42 |
|---|---|
| Shape: | Circle |
| Typical Particle Retention in Liquid: | 2.5 µm |
| Normal Thickness: | 200 µm |
| Typical Water Flow Rate: | 5 ml/min |
| Nominal Basis Weight: | 100 g/m² |
| Nominal Air Flow Rate: | 96 s/100 mL/in² |
| Nominal Ash Content: | 0.007% |
| Material: | High-Quality Cotton Linters |
| Alpha Cellulose Content Min.: | ≥98% |
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