Whatman 标准级定性滤纸 Grade 5   
  • 品牌 : Whatman

  • 产品分类:滤纸


A standard grade clarifying filter excellent for cloudy suspensions and for water and soil analysis.

These cellulose filters are used in qualitative analytical techniques to determine and identify materials. Prepleated qualitative filters are also available, which give improved flow rate and increased loading capacity compared to equivalent flat filters.


Grade 5 : 2.5 µm
The maximum degree of fine particle filtration in the qualitative range. Capable of retaining the fine precipitates encountered in chemical analysis. Slow flow rate. Excellent clarifying filter for cloudy suspensions and for water and soil analysis. Also available prepleated as Grade 5V.

 
PRODUCT SPECIFICATIONS
Parameter Grade 5 Qualitative Filter Paper Standard Grade
Grade Grade 5 
Grade Type Standard 
Typical Particle Retention in Liquid 1 2.5 µm 
Nominal thickness 200 µm
Typical water flow rate 2 5 ml/min 
Nominal basis weight 100 g/m²
Nominal air flow rate 96 s/100 ml/in² 
Nominal Ash Content 3 0.06% 
Material Cellulose 
Typical Trace Element Levels Aluminium 2.5 µg/g Antimony <0.5 µg/g Arsenic <0.5 µg/g Barium <0.5 µg/g Boron <1 µg/g Calcium 8.3 µg/g Chromium 1.5 µg/g Copper 2 µg/g Iron 12 µg/g Lead <0.5 µg/g Magnesium 4 µg/g Manganese <0.5 µg/g Mercury <0.5 µg/g Potassium 2.3 µg/g Silicon 6.2 µg/g Sodium 16.8 µg/g Zinc 64.5 µg/g 
Application Excellent clarifying filter for cloudy suspensions and for water and soil analysis. 
Diameter ( mm ) 25 / 42.2 / 47 / 55 / 60 / 70 / 90 / 110 / 125 / 150 / 185 / 240 / 320
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.

 
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