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Clean Rooms: Particle Sizes

13th May 2015

Keeping your cleanroom clean is no small task but we are here to help! SOS Cleanrooms carries the supplies your facility needs on a daily basis to maintain your high standards. We carry cleanroom wipers like sterile Texwipes that are designed for contamination control and cleaning in regulated industries.

We’ve been covering cleanroom basics in our recent blogs and will continue with this for the next few blogs. A cleanroom is a space that has a number of controls in place to limit particulates and contaminants. According to Wikipedia the average outdoor urban environment contains as many as 35,000,000 particles per cubic meter that are of the size of 0.5 µm This is the same as a Cleanroom level ISO 9 the gradations go down from there until you reach a ISO 1 cleanroom that allows no particles in that size range. So what does that size even mean you might ask if you are new to cleanrooms. The size designation µm is the scientific term for the unit of measurement that used to me known as a micron. It is equal to one millionth of a meter, or one thousandth of a millimeter or one 25th of an inch. There are 25,400 microns to one inch. 40µm is visible to the human eye. 5µ can be felt by the human fingertip.A grain of sand is from 100 to 2000 µm a mold spore is 10-30 µm. (source:http://www.ohiogt.com/pe/micron.html). So, those little particles find their way in and our Texwipes get them out! Order some today!