Whatman quantitative ashless filter paper 589/1, 589/2 AND 589/3

Grade 589/1: 12-25µm€˜Black Ribbon Filter€™€“ the established standard in quantitative analysis for the filtration of coarse precipitates (class 2a acc. to DIN 53 135). Ashless filter paper with very high flow rate. Used for many quantitative standard methods, especially for gravimetric applications (e.g. determination of the ash content in foodstuffs to Section 35 LMBG*), or for the Blaine test in the cement industry. Also available prepleated as Grade 589/1 1/2.

Grade 589/2: 4-12µm€˜White Ribbon Filter€™€“ ashless standard filter paper for medium fine precipitates (class 2b acc. to DIN 53 135) offering medium filtration speed. Applied in a variety of routine methods in quantitative analysis, e.g. determination of the sand content in foodstuffs to Section 35 LMBG*; determination of the grade of flour; or analysis of aqueous suspensions in the paper industry. Also available prepleated as Grade 589/2 1/2.

Grade 589/3: 2µm€˜Blue Ribbon Filter€™€“ ashless standard filter paper for very fine precipitates (class 2d acc. to DIN 53 135). 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 acc. to Section 35 LBMG*. Also available prepleated as Grade 589/3 1/2.