Lab
Filter
Paper
Organic Chemistry Molecular Model Sets, Permanent Neodymium Rare Earth Magnets, Magnifying Glasses, Test Strips, Lab Supplies, Tuning Forks
Qualitative Lab Filter Paper
These qualitative lab filter papers are equivalent
to Whatman Grade 1. They are medium speed and the most popular for simple lab experiments. Applications include filtering
precipitated calcium carbonate found in hard water (see hard water test strips);
soil analysis; paper chromatography; and even seed germination.
- equivalent to Whatman #1 lab filter paper
- pore size is 11 microns (11um)
- use to extract various precipitates
- suitable for paper chromatography separation experiments
- use 70mm or 90mm with as seed germination chambers
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Filtering paper can be used for precipitate extraction, chromatography experiments or as a support for seed growth. |
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Thin Paper Chromatography
Cut the larger sizes, 15-18cm disks into sheets in the shape of squares or rectangles for separating pigments found in ink or plant extracts. The example below shows a paper chromatographic separation of felt pen ink using a simple solvent such as rubbing alchohol. It is a low cost way to introduce kids to a simple but instructive laboratory experiment.
- Cut filter paper into rectangles along the grain of the paper.
- Dab ink from felt pens in a row along the bottom.
- Pour enough rubbing alchohol into container to cover ink dabs.
- Capillary action will draw liquid up the paper to show ink pigment separation.
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