Whatman 无灰级定量滤纸 Grade 589/1   
  • 品牌 : Whatman

  • 产品分类:滤纸


With less than 0.01% ash, GE’s Whatman Grade 589/1 filter papers can be used for the Blaine test in the cement industry and as an ash content test filter for foodstuffs.

Herzberg filtration speed of 50 s*
Black ribbon filter’ for fast filtration of coarse precipitates
High purity (< 0.01% ash)
Blaine test and ash content test compatible
Also available prepleated as Grade 589/1 ½
*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

Blaine test filter paper
Whatman Grade 589/1 filter papers from GE Healthcare’s Life Sciences business are designed for fast filtration of coarse precipitates in support of tests such as cement fineness measurement in a standard Blaine test or determination of the ash content in foodstuffs.

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 589/1 Filter for Coarse Precipitate Retention
Format Circles 
Type Ashless 
Typical Thickness 190 µm
Basis Weight 80 g/m²
Filtration Time to Herzberg 50 s
Filtration Speed (Herzberg) 25 s
Ash Content 1 0.01% 
Material High-quality cotton linters 
Alpha Cellulose Content Min. 98% 
Ribbon Filter Color Black 
Application Designed for gravimetric analysis and the preparation of samples for instrumental analysis. For the filtration of coarse precipitates. For many quantitative standard methods, especially for gravimetric applications (e.g., determination of the ash content in foodstuffs), or for the Blaine test in the cement industry. 
Grade Grade 589/1 
Diameter ( mm ) 90 / 110 / 125 / 150
1:Ash is determined by ignition of the cellulose filter at 900°C in air.

 
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