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物料
circles
cotton filters (high-quality cotton linters)
包装
pack of 100
制造商/商品名称
Whatman 1441-090
Whatman Article No. 28418016 (US reference)
参数
0.22 psi wet burst
54 sec/100 mL speed (Herzberg)
直径
90 mm
厚度
220 μm
灰分
≤0.007%
孔径
20-25 μm (Particle retention)
基本重量
85 g/m2
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此商品 | 684449 | 684430 | 684465 |
|---|---|---|---|
| assay >99.9% | assay >99.5% | assay >99% | assay 99% |
| semiconductor properties N-type (mobility=0.21 cm2/V·s) | semiconductor properties N-type (mobility=0.21 cm2/V·s) | semiconductor properties N-type (mobility=0.21 cm2/V·s) | semiconductor properties N-type (mobility=0.1 cm2/V·s) |
| Quality Level 100 | Quality Level 100 | Quality Level 100 | Quality Level 100 |
| form solid | form solid | form powder | form powder |
| description functionalized fullerene | description functionalized fullerene | description functionalized fullerene | description - |
| solubility chlorobenzene: soluble | solubility - | solubility chlorobenzene: soluble, organic solvents: soluble, toluene: soluble | solubility chlorobenzene: soluble, organic solvents: soluble, toluene: soluble |
![[6,6]-苯基 C 61 丁酸甲酯 >99.5%](/deepweb/assets/sigmaaldrich/product/structures/359/221/d990c746-0960-4c69-bf76-fe09b193824d/640/d990c746-0960-4c69-bf76-fe09b193824d.png)
![[6,6]-苯基 C71 丁酸甲酯，异构体混合物 99%](/deepweb/assets/sigmaaldrich/product/structures/716/624/9fb9f2f0-ae99-429f-8d3a-b12267976a4d/640/9fb9f2f0-ae99-429f-8d3a-b12267976a4d.png)
一般描述
Cytiva′s Whatman Grade 41 environmental pollution papers are among the fastest filter papers in the Whatman ashless range. This gravimetric filter is well suited for quantitative analysis of soil and air.
Fast ashless paper for pollution analysis
Whatman Grade 41 filters from Cytiva′s business are suitable for quantitative air pollution analysis as a paper tape for impregnation when determining gaseous compounds at high flow rates.
Grade 41 filters are also commonly used in preparing solid environmental samples (e.g., soils, sludges) for metals analysis after nitric acid digestion. Grade 41 is available in a convenient, disposable, 47 mm filter funnel with a 250 ml capacity. The 47 mm diameter filter can be easily removed for further analysis or culturing.
Fast ashless paper for pollution analysis
Whatman Grade 41 filters from Cytiva′s business are suitable for quantitative air pollution analysis as a paper tape for impregnation when determining gaseous compounds at high flow rates.
Grade 41 filters are also commonly used in preparing solid environmental samples (e.g., soils, sludges) for metals analysis after nitric acid digestion. Grade 41 is available in a convenient, disposable, 47 mm filter funnel with a 250 ml capacity. The 47 mm diameter filter can be easily removed for further analysis or culturing.
特点和优势
- Extremely low ash content (0.007% ash maximum)
- 20 µm nominal particle retention rating
- Fast filtration speed (Herzberg 54 s)
- Commonly used for routine air pollution analysis and soil pollution analysis
其他说明
Field of Use : For internal research use only. Products are not intended for diagnostic use or resale.
法律信息
Whatman is a registered trademark of Cytiva
法规信息
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