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A comment on Ask HN: What equipment measures mold, dust, tree, grass and ragweed levels?. Parent comment

Re:Ask HN: What equipment measures mold, dust, tree, grass a... by dalke on Thursday July 02, 2015 @06:30PM (#9822159)
See http://xkcd.com/1425/ , or my second sentence at https://news.ycombinator.com/item?id=9818893 . ;)
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