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Here is a video we recorded in the dept with Dr Rhys Thomas on how to create a CRT filter for cleaning air of Covid (and other viruses and bacteria) in classrooms, offices etc. They are very easy to create and perform about 15 times better than a Dyson!
youtu.be/l4uCRuO-Ayo

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Prof Rhys Thomas MBBS MD FRCA@rhysthomas
Here we go! A Professional video showing how to make a CRT Hepa Filter in 10 min and £140.Thank you to Mr Aled Davies and Ysgol BroPedr Lampeter and Ceredigion Local & Education Authority youtu.be/l4uCRuO-Ayo
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