Whatman Filter Paper 42 Pore Size

Typical analytical precipitates include barium sulfate metastannic acid and finely precipitated calcium carbonate.

Whatman filter paper 42 pore size. Grade 42 2 5 µm grade 44 3 µm medium precipitate. Our membrane filter offering includes pore sizes from 0 015 to 12 µm. Grade 42 is designed for gravimetric analysis and sample preparation for instrumental analysis. Whatman grade 42 quantitative filter paper ashless whatman 1442 125 ashless grade 42 quantitative filter paper diameter.

This is the filter paper size chart used to be on whatman s boxes. 2 5µm p whatman 1442 125 ashless grade 42 quantitative filter paper diameter. 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.

Smooth surface for easy recovery of precipitates. Whatman grade 542 filter paper is often used in gravimetric metal determinations. Membrane filters are recommended for retention of very small particles or for microbiological purposes. Whatman grade 542 filter paper has a high retention of fine particles 2 7 μm at 98 efficiency under demanding conditions.

Grade 540 8 µm. It is helpful for determining what filter paper is needed. It has a slow flow rate and is very hard and strong with excellent chemical resistance. Whatman filter papers and membranes are world renowned as a standard for laboratory filtration and are associated with quality reliability and reproducibility.

2 5 μm slow filter paper a world standard for critical gravimetric analysis with the finest particle retention of all whatman cellulose filter papers. The tough surface makes these filters suitable for a wide range of critical filtration procedures. Select the optimal whatman filter for your application whatever you need to filter whatman has it covered. Ultra fine filter with retention.

It has a very smooth surface making it easy to scrape or. 42 2 5µm fine. Sterile filtration use sterile filter and membrane with pore size 0 2 μm. Grade 42 filter papers have the finest retention of all whatman ashless filter paper grades.

25 μm only half the thickness of grade 113 and suitable for coarse or gelatinous precipitates.