4 ms·
Build a do-it-yourself home air purifier for about $25
- natvert 8y agoAm I reading this right, 10% air quality improvement for the diy version vs 100% for a retail device?
- natvert 8y agoUm... Why the down vote? "Terrell used a sensitive air-quality meter to demonstrate that one high-end HEPA system brought the particulate count in a dusty room down to virtually zero. His homemade system brought the count down to about 10 percent of its former level."
- detaro 8y agowouldn't that be a 90 % improvement?