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Whatman 标准级定性滤纸 Grade 1
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品牌 : Whatman
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产品分类：滤纸
Whatman Grade 1 Qualitative Filter Papers are the most widely used filter paper for routine laboratory applications, qualitative analytical separations, and clarifying liquids. They are the standard grade cellulose filter papers for medium flow rates.
Qualitative analytical separations for precipitates such as lead sulfate, calcium oxalate (hot), and calcium carbonate
Agricultural soil analysis and seed testing procedures
Industrial food processing techniques to extract liquid or separate solid foodstuffs from associated liquid
Air pollution monitoring by collecting atmospheric dust from airflow and photometrically measuring the stain-intensity
Gas detection by quantitative chromogenesis with optical reflectance
Medium flow rate and retention for a wide range of qualitative analytical separations
Grade 1 Qualitative Filter Papers (11 µm particle retention) are available in a variety of sizes and formats including circles, sheets and prepleated filters. They are also available in FilterCup format, a convenient, 250 ml capacity disposable 70 mm filter funnel molded from polypropylene with an integral, heat-bonded filter.
PRODUCT SPECIFICATIONS
| Parameter | Grade 1 Qualitative Filter Paper Standard Grade |
|---|---|
| Grade | Grade 1 |
| Grade Type | Standard |
| Typical Particle Retention in Liquid 1 | 11 µm |
| Nominal thickness | 180 µm |
| Typical water flow rate 2 | 57 ml/min |
| Nominal basis weight | 87 g/m² |
| Nominal air flow rate | 13 s/100 ml/in² |
| Nominal Ash Content 3 | 0.06% |
| Material | Cellulose |
| Typical Trace Element Levels | Aluminium 3.6 µg/g Antimony <0.5 µg/g Arsenic <0.5 µg/g Barium <0.5 µg/g Boron <1 µg/g Calcium 27.5 µg/g Chromium 1 µg/g Copper 0.9 µg/g Iron 13.7 µg/g Lead <0.5 µg/g Magnesium 21 µg/g Manganese <0.5 µg/g Mercury <0.5 µg/g Potassium 6.2 µg/g Silicon 8.8 µg/g Sodium 32.3 µg/g Zinc 58.3 µg/g |
| Application | Used filter paper for routine applications with medium retention and flow rate. Covers a wide range of laboratory applications and is frequently used for clarifying liquids. |
| Format | Circles / Sheets |
| Dimensions ( mm ) | 10 / 15 / 20 / 25 / 30 / 47 / 55 / 70 / 85 / 90 / 110 / 125 / 145 / 150 / 185 / 240 / 270 / 320 / 385 / 400 / 500 / 26*31 / 47*100 / 75*100 / 460*570 / 600*600 / 580*680 |
| Pack size | 1 / 100 / 400 / 500 pieces |
1：Particle retention rating at 98% efficiency.
2：For 9 cm diameter.
3：Ash is determined by ignition of the cellulose filter at 900°C in air.
2：For 9 cm diameter.
3：Ash is determined by ignition of the cellulose filter at 900°C in air.
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