Filtry ilościowe bezpopiołowe Grade 589/3

Dzięki niskiej zawartości popiołu, papier filtracyjny Grade 589/3 marki Whatman jest szczególnie przydatny do wychwytywania bardzo drobnych cząstek stałych, takich jak nierozpuszczalne cząstki w tłuszczach lub olejach.
Whatman Grade 589/3 ashless filter paper is particularly useful in capturing very fine particulate samples such as insoluble molecules in fats or oils or supporting ash free dry mass.

• High purity (< 0.01% ash) for ash free dry mass methods
• ‘Blue ribbon filter’
• Very fine precipitate retention (class 2d acc. to DIN 53 135)
• Herzberg filtration speed of 750 s*
• Also available prepleated as Grade 589/3 ˝

*The time taken to filter 100 ml water (20°C) through a filter area of 10 cm˛  at a constant pressure of 5 cm water column

Ash free dry mass
Grade 589/3 filter paper supports accurate measurement of ash free dry mass. The blue ribbon filter is an established component in a variety of quantitative analysis methods, such as quantification of insoluble contaminants in animal and vegetable fats and oils.
Grade Grade 589/3 
Type Ashless 
Typical Thickness 160 µm
Basis Weight 84 g/m2
Filtration Time to Herzberg 1500 s
Filtration Speed (Herzberg) 375 s
Ash Content 0.01% 
Material High-quality cotton linters 
Alpha Cellulose Content Min. 98
Ribbon Filter Color Blue 
Application Designed for gravimetric analysis and the preparation of samples for instrumental analysis. For very fine precipitates. Slow filter paper with highest efficiency for collecting very small particles. Also used for many analytical routine methods in different industries; e.g.; determination of the amount of insoluble contaminants in animal and vegetable fats and oils. 
Product Product Name Diameter
10300210 Grade 589/3 Filter for Fine Precipitate Retention; 110 mm circle (100 pcs) 110 mm
10300212 Grade 589/3 Filter for Fine Precipitate Retention; 150 mm circle (100 pcs) 150 mm
10300214 Grade 589/3 Filter for Fine Precipitate Retention; 185 mm circle (100 pcs) 185 mm
10300263 Grade 589/3 Filter for Fine Precipitate Retention; 12.7 mm circle (1000 pcs) 12.7 mm