Whatman Filter Paper 42 Pore Size

It is helpful for determining what filter paper is needed.

Whatman filter paper 42 pore size.

25 μm only half the thickness of grade 113 and suitable for coarse or gelatinous precipitates. Sterile filtration use sterile filter and membrane with pore size 0 2 μm. 2 5µm p whatman 1442 125 ashless grade 42 quantitative filter paper diameter. Whatman grade 542 filter paper has a high retention of fine particles 2 7 μm at 98 efficiency under demanding conditions.

The tough surface makes these filters suitable for a wide range of critical filtration procedures. Below are summaries of the grade properties and common uses. 2 5 μm slow filter paper a world standard for critical gravimetric analysis with the finest particle retention of all whatman cellulose filter papers. Whatman grade 42 quantitative filter paper ashless whatman 1442 125 ashless grade 42 quantitative filter paper diameter.

42 2 5µm fine. Ultra fine filter with retention. 12 25 μm a fast filter paper with high wet strength. Whatman grade 542 filter paper is often used in gravimetric metal determinations.

Grade 42 is designed for gravimetric analysis and sample preparation for instrumental analysis. Grade 42 2 5 µm grade 44 3 µm medium precipitate. Whatman filter papers and membranes are world renowned as a standard for laboratory filtration and are associated with quality reliability and reproducibility. Smooth surface for easy recovery of precipitates.

Grade 540 8 µm. This is the filter paper size chart used to be on whatman s boxes. Our membrane filter offering includes pore sizes from 0 015 to 12 µm. Different types of qualitative whatman filter paper their properties the most common qualitative paper grades are 1 6 595 597 598 and 602 which have applications across multiple industries.

Typical analytical precipitates include barium sulfate metastannic acid and finely precipitated calcium carbonate. Thickest filter paper in the whatman range. 2 5 μm slow filter paper a world standard for critical gravimetric analysis with the finest particle retention of all whatman cellulose filter papers. Grade 42 filter papers have the finest retention of all whatman ashless filter paper grades.

It has a slow flow rate and is very hard and strong with excellent chemical resistance.