Three QuantAQ MODULAIR-PM air quality monitors – one for each of three Central Asian partner universities – were delivered to Washington University. Currently they are being collocated (operated side-by-side) to quantify comparability. This collocation is being conducted at the Missouri Department of Natural Resources NCore monitoring station in the City of St. Louis, which includes a Teledyne T640 monitor with US EPA Federal Equivalent Method (FEM) designations for PM2.5 and PM10. T640 data will be used to assess MODULAIR-PM bias compared to the FEM. The MODULAIR-PM devices will be distributed to Central Asian partners in early May.