推薦產品
材料
cellulose filters
circles
包裝
pack of 100
製造商／商標名
Whatman 1004-042
Whatman Article No. 28414007 (US reference)
參數
0.22 psi wet burst
37 sec/100 mL speed (Herzberg)
直徑
42.5 mm
厚度
205 μm
灰分
≤0.06%
孔徑
20-25 μm (Particle retention)
基重
92 g/m2
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一般說明
Whatman Grade 4 Qualitative Filter Papers are a standard grade, high flow rate filter paper.
Excellent retention: captures coarse particles and gelatinous precipitates such as ferric hydroxide and aluminum hydroxide. Fast filtration: useful for routine clean-up of biological fluids or organic extracts during analysis
Grade 4 Qualitative Filter Papers (20-25 µm particle retention) are available in a variety of sizes and formats including circles, sheets, and rolls. They are also available as prepleated filters, which give improved flow rate and increased loading capacity compared to equivalent flat filters.
Excellent retention: captures coarse particles and gelatinous precipitates such as ferric hydroxide and aluminum hydroxide. Fast filtration: useful for routine clean-up of biological fluids or organic extracts during analysis
Grade 4 Qualitative Filter Papers (20-25 µm particle retention) are available in a variety of sizes and formats including circles, sheets, and rolls. They are also available as prepleated filters, which give improved flow rate and increased loading capacity compared to equivalent flat filters.
特點和優勢
- Useful in qualitative analytical separations when Fast flow is required and the collection of fine particles is not critical.
- These cellulose filters are used in qualitative analytical techniques to determine and identify materials (e.g., in air pollution monitoring).
其他說明
Field of Use : For internal research use only. Products are not intended for diagnostic use or resale.
法律資訊
Whatman is a registered trademark of Cytiva
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Elizabeth Evans et al.
The Analyst, 139(21), 5560-5567 (2014-09-11)
This paper describes a silica nanoparticle-modified microfluidic paper-based analytical device (μPAD) with improved color intensity and uniformity for three different enzymatic reactions with clinical relevance (lactate, glucose, and glutamate). The μPADs were produced on a Whatman grade 1 filter paper
Elizabeth Evans et al.
The Analyst, 139(9), 2127-2132 (2014-03-13)
A systematic investigation was conducted to study the effect of paper type on the analytical performance of a series of microfluidic paper-based analytical devices (μPADs) fabricated using a CO2 laser engraver. Samples included three different grades of Whatman chromatography paper
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