Filter Paper Qualitative No.235
Filter Paper Qualitative No.235: Highest retention efficiency, retains very fine particulates, very slow flow rate, smooth. Filter Paper Qualitative No.235 Manufactured from 100% cotton linter cellulose, these qualitative filter papers exhibit excellent pH tolerance ranging from 0 to 12. They maintain structural integrity at temperatures up to 120°C and feature a...
Filter Paper Qualitative No.235:
Highest retention efficiency, retains very fine particulates, very slow flow rate, smooth. Filter Paper Qualitative No.235 Manufactured from 100% cotton linter cellulose, these qualitative filter papers exhibit excellent pH tolerance ranging from 0 to 12. They maintain structural integrity at temperatures up to 120°C and feature a minimal ash content of 0.1%, ensuring minimal sample contamination during analytical procedures.
Applications:
- Filter Paper Qualitative No.235 Engineered for effective clarification and precipitate removal from solutions, this filter medium provides optimal performance in qualitative analytical procedures. Ideal for preparatory stages of analytical workflows where particulate elimination is essential for subsequent testing protocols.
Technical Data:
| Weight (g/m) | 95 |
| Thickness (mm) | 0.17 |
| Flow Time (sec) | 1,200 |
| Absorption speed (cm) | 4.0 |
| Wet Strength (kPa) | - |
| Nominal Rating (um) | (very fine) |
| Collection Efficiency (%, 0.3um DOP) | - |
Filter Paper Qualitative No.235 Flow time indicates seconds needed for 100 mL of distilled water at 20°C to pass through a 10cm² filter paper section under 10cm water column pressure. Absorption speed measures water travel distance (cm) along a vertical filter paper strip during a 10-minute period at 20°C. Wet strength is determined using the Mullen Burst Strength Tester after water immersion.
Know more about filter paper:
| Type | Pore Size Range | Typical Use | Effect on Liquid Clarity | Flow Speed |
|---|---|---|---|---|
| Qualitative (e.g., Grade 1) | 8–11 μm | Routine lab filtration, removing larger sediments | Good for basic clarity (traps visible particles like sand or grounds) | Fast |
| Quantitative (e.g., Grade 5 or finer ash-free) | 2.5–3.5 μm | Analytical work, gravimetric analysis | Best for high clarity (traps very fine particles, ideal for purifying solutions or beverages like wine) | Medium to slow |
| Glass Microfiber | 0.7–2.7 μm | High-temperature or chemical-resistant filtration | Excellent for ultra-clear results in specialised cases (e.g., air pollution analysis), but less common for liquids | Fast (but requires flat use, not folding) |
| Specialty (e.g., Wine Filtration) | 7–10 μm | Food/beverage clarification | High clarity for consumables, retaining fine sediments while preserving taste | Medium |
| Size |
47MM, 55MM, 70MM, 90MM, 110MM, 125MM, 150MM, 185MM |
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