Stock Code:
4A-110
Filter Paper Quantitative No. 4A 110mm
Stock:
1 - 9
Description
High wet strength, suitable for use under high pressure, high chemical and pH resistance, retains fine crystalline precipitates (<5um), slow flow.
Quantitative / Hardened Filter Papers:
- 100% cotton linter cellulose
- Ash Content: 0.01% (except for 4A 0.025%)
- Acid Washed: Double acid washed in hydrochloric then hydrofluoric acid, then rinsed with ultra pure water to neutralise. No. 4A is further treated with nitric acid before washing.
Applications:
- Gravimetric analysis
- Environmental monitoring
Technical Data:
| Weight (g/m) | 96 |
| Thickness (mm) | 0.12 |
| Flow Time (sec) | 915 |
| Absorption speed (cm) | 4.0 |
| Wet Strength (kPa) | 52 |
| Nominal Rating (um) | 1 (very fine) |
| Collection Efficiency (%, 0.3um DOP) | 90 |
Notes:
- Flow time is the time in seconds required to filter 100mL of distilled water at 20c under pressure supplied by a 10cm water column through a 10cm2 section of filter paper.
- Absorption speed is the distance in cm that water will travel in an upright strip of filter paper in 10 minutes at 20c.
- Wet strength is the pressure measured by Mullen Burst Strength Tester after soaking in water.
Details
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Pack Size:PK100
