Description
Cytiva® Whatman® Grade 42 Quantitative Ashless Filter Paper, Very Fine Precipitates Retained, 9 cm, 1442-090
Features:
- High-purity, ashless Grade 42 quantitative filter papers are suitable for wide range of critical analytical filtration procedures for quantitative analysis
- Offer finest retention of all Whatman ashless filter paper grades—retention of extremely small particles
- Designed for gravimetric analysis and sample preparation for instrumental analysis
- Ashless: 0.007% ash maximum
- Fine (2.5 μm) nominal particle retention rating, eliminates 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
Applications:
- Common example of use of Grade 42 is as calcium carbonate filter for analysis in cement industry
- Other typical precipitates for gravimetric analysis include barium sulfate and metastannic acid for use in glazes, coatings, and pigments
- High purity of Grade 42 filters also makes them suitable for processes that require ashing
Specifications
| Manufacturer | Cytiva |
|---|---|
| Model No | 1442-090 |