Whatman Filter Paper 42 Pore Size

Below are summaries of the grade properties and common uses.

Whatman filter paper 42 pore size.

25 μm only half the thickness of grade 113 and suitable for coarse or gelatinous precipitates. 42 2 5µm fine. Our membrane filter offering includes pore sizes from 0 015 to 12 µm. This is the filter paper size chart used to be on whatman s boxes.

12 25 μm a fast filter paper with high wet strength. Grade 42 is designed for gravimetric analysis and sample preparation for instrumental analysis. Sterile filtration use sterile filter and membrane with pore size 0 2 μm. Thickest filter paper in the whatman range.

Typical analytical precipitates include barium sulfate metastannic acid and finely precipitated calcium carbonate. Membrane filters are recommended for retention of very small particles or for microbiological purposes. 2 5µm p whatman 1442 125 ashless grade 42 quantitative filter paper diameter. Select the optimal whatman filter for your application whatever you need to filter whatman has it covered.

Grade 540 8 µm. Ultra fine filter with retention. It has a very smooth surface making it easy to scrape or. It has a slow flow rate and is very hard and strong with excellent chemical resistance.

It is helpful for determining what filter paper is needed. Grade 42 filter papers have the finest retention of all whatman ashless filter paper grades. The tough surface makes these filters suitable for a wide range of critical filtration procedures. 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 542 filter paper has a high retention of fine particles 2 7 μm at 98 efficiency under demanding conditions. Whatman grade 42 quantitative filter paper ashless whatman 1442 125 ashless grade 42 quantitative filter paper diameter. Smooth surface for easy recovery of precipitates. Whatman filter papers and membranes are world renowned as a standard for laboratory filtration and are associated with quality reliability and reproducibility.

Grade 42 2 5 µm grade 44 3 µm medium precipitate.