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Whatman 无灰级定量滤纸 Grade 589/2
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品牌 : Whatman
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产品分类：滤纸
Whatman Grade 589/2 filters from GE are used in routine quantitative analyses, including analysis of aqueous suspension in paper, flour analysis, and sand content quantification.
High purity (< 0.01% ash)
Retention of medium fine precipitates, such as grains of sand
Herzberg filtration speed of 140 s*
‘White ribbon filter’
*The time taken to filter 100 ml water (20°C) through a filter area of 10 cm² at a constant pressure of 5 cm water column
Whatman quantitative filters from GE Healthcare’s Life Sciences business are designed for gravimetric analysis. Grade 589/2 Whatman ashless filter paper can also be purchased as pre-pleated 589/2 ½ sheets.
General filtration with quantitative papers
Grade 589/2 ashless filter paper can be used when medium fine precipitates are being collected and papers must be ashed to support analysis. Grade 589/2 is suitable for a variety of routine quantitative analysis methods, such as determination of the sand content in foodstuffs, flour analysis, and aqueous suspension analysis in the paper industry.
Looking for a filter paper, membrane filter, or syringe filter? Let GE help you find the optimal filter for your needs to ensure reliable analysis.
PRODUCT SPECIFICATIONS
| Parameter | Grade 589/2 Medium Fine Precipitate Filter |
|---|---|
| Format | Circles |
| Type | Ashless |
| Typical Thickness | 180 µm |
| Basis Weight | 85 g/m² |
| Filtration Time to Herzberg | 140 s |
| Filtration Speed (Herzberg) | 70 s |
| Ash Content 1 | 0.01% |
| Material | High-quality cotton linters |
| Alpha Cellulose Content Min. | 98% |
| Ribbon Filter Color | White |
| Application | Designed for gravimetric analysis and the preparation of samples for instrumental analysis. For medium fine precipitates offering medium filtration speed. Applied in a variety of routine methods in quantitative analysis, e.g., determination of the sand content in foodstuffs. Determination of the grade of flour; or analysis of aqueous suspensions in the paper industry. |
| Grade | Grade 589/2 |
| Diameter ( mm ) | 12.7 / 40.5 / 50 / 55 / 70 / 90 / 110 / 125 / 150 / 185 / 240 |
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