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--- projects:dustcounter [2017/05/07 05:30]
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+++ projects:dustcounter [2017/05/07 12:20]
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 {{:projects:dustcounter:0715162344a.jpg?200|}}{{:projects:dustcounter:0721162314.jpg?200|}}
-Measures particulate matter in micrograms per cubic meter.  Recommended exposure limits range from 5-15 mcg/m^3
+Measures particulate matter at 1μm (one micron) diameter and calculates concentration in micrograms per cubic meter.
+Recommended exposure limits from various industry groups range from 5-15 mcg/m^3,
 Based on:
@@ Line 12: / Line 14: @@
 Test readings:
-{{:projects:dustcounter:screen_shot_2017-05-07_at_12.15.47_am.png?200|}}{{:projects:dustcounter:screen_shot_2017-05-07_at_12.16.30_am.png?200|}}
+  * 7/21/16 {{:projects:dustcounter:screen_shot_2017-05-07_at_7.19.13_am.png?300|}}
+  * 7/28/16 {{:projects:dustcounter:screen_shot_2017-05-07_at_12.15.47_am.png?300|}}
+  * 5/5/17 {{:projects:dustcounter:screen_shot_2017-05-07_at_7.07.56_am.png?300|}}

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