Do anyone here have any ideas on how to conduct flammability test, fluid resistance and differential pressure using improvised methods? We are trying to look for ways to test coconut coir fiber as potential fabric material in making face masks. However, we don't have any device at school to test the needed parameters. Testings centers are also expensive, so if anyone can suggest a way, it will really be a big help. Thanks
For over a century, differential pressure was measured with a liquid column, hence the units: millimeters of mercury and inches of water. The ancient Egyptians used a column of water to measure stagnation pressure in a flowing stream. On several occasions when precision instruments have been lost or damaged in shipping, I have calibrated common devices available at any auto supply. I've done the same with postal scales available at an office supply and precision weights.
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