
Glass Microfiber Filters – Standard Glass Microfiber Filters
Basic Description
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Material: Borosilicate glass microfibers
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Binder: Binder-free (most standard grades)
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Appearance: White, soft, flexible mat
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Structure: Depth filter (high dirt-holding capacity)
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Key Characteristics
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High particle retention efficiency
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Fast filtration speed
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High loading capacity
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Excellent thermal stability
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Chemically inert to most acids, solvents, and reagents
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Low pressure drop
Typical Applications
Environmental & Water Analysis
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Total Suspended Solids (TSS)
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Total Dissolved Solids (TDS)
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Air and water particulate monitoring
Laboratory
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Sample clarification
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Pre-filtration before membrane filtration
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Gravimetric analysis
Industrial
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Oil and fuel filtration
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Food and beverage analysis
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Pharmaceutical and chemical processing
Common Specifications
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Retention range: ~0.7 µm to 10 µm (depending on grade)
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Thickness: High compared to cellulose filters
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Ash content: Very low
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Operating temperature: Up to ~500 °C (grade dependent)
Formats Available
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Circles (various diameters)
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Sheets
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Rolls (for air monitoring and industrial use)
Advantages Over Cellulose Filter Paper
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Higher flow rates
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Better wet strength
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Higher temperature resistance
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Greater loading capacity
Packaging
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Common packs: 100 circles/box (varies by diameter)
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Individually boxed by size and grade
| Grade | Retention (µm) | Filtration Speed (Herzberg sec / 100 mL) | Filtration Rapidity (mL/min) | Loading Capacity | GE Whatman Cross Reference |
|---|---|---|---|---|---|
| 151 | 0.7 | 274 | 25 | Very High | GF/F |
| 121 | 1.0 | 143 | 48 | Very High | GF/B |
| 131 | 1.0 | 88 | 78 | Very High | GF/C |
| 161 | 1.1 | 67 | 102 | Very High | 934-AH |
| 111 | 1.2 | 53 | 130 | Very High | GF/A |
| 141 | 3.1 | 19 | 350 | Very High | GF/D |
| 169 | 1.0 | 53 | 130 | Very High | 934-AH |
(100 circles/box)
| Size (cm) | 111 | 121 | 131 | 141 | 151 | 161 | 169 |
|---|---|---|---|---|---|---|---|
| 2.1 | 1110-0210 | 1210-0210 | 1310-0210 | 1410-0210 | 1510-0210 | 1610-0210 | 1690-0210 |
| 2.4 | 1110-0240 | 1210-0240 | 1310-0240 | 1410-0240 | 1510-0240 | 1610-0240 | 1690-0240 |
| 2.5 | 1110-0250 | 1210-0250 | 1310-0250 | 1410-0250 | 1510-0250 | 1610-0250 | 1690-0250 |
| 4.25 | 1110-0425 | 1210-0425 | 1310-0425 | 1410-0425 | 1510-0425 | 1610-0425 | 1690-0425 |
| 4.7 | 1110-0470 | 1210-0470 | 1310-0470 | 1410-0470 | 1510-0470 | 1610-0470 | 1690-0470 |
| 5.5 | 1110-0550 | 1210-0550 | 1310-0550 | 1410-0550 | 1510-0550 | 1610-0550 | 1690-0550 |
| 7.0 | 1110-0700 | 1210-0700 | 1310-0700 | 1410-0700 | 1510-0700 | 1610-0700 | 1690-0700 |
| 9.0 | 1110-0900 | 1210-0900 | 1310-0900 | 1410-0900 | 1510-0900 | 1610-0900 | 1690-0900 |
| 11.0 | 1110-1100 | 1210-1100 | 1310-1100 | 1410-1100 | 1510-1100 | 1610-1100 | 1690-1100 |
| 12.5 | 1110-1250 | 1210-1250 | 1310-1250 | 1410-1250 | 1510-1250 | 1610-1250 | 1690-1250 |
| 15.0 | 1110-1500 | 1210-1500 | 1310-1500 | 1410-1500 | 1510-1500 | 1610-1500 | 1690-1500 |
| 24.0 | 1110-2400 | 1210-2400 | 1310-2400 | 1410-2400 | 1510-2400 | 1610-2400 | 1690-2400 |
| 32.0 | 1110-3200 | 1210-3200 | 1310-3200 | 1410-3200 | 1510-3200 | 1610-3200 | 1690-3200 |
Q & A
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