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:

• http://wiki.seeed.cc/Grove-Dust_Sensor/

References:

• https://www.osha.gov/dts/chemicalsampling/data/CH_259640.html
• https://www.osha.gov/dsg/annotated-pels/tablez-1.html

Test readings:

• 7/21/16
• 7/28/16
• 5/5/17
• 1/15/19