Our laboratory weighs PTFE filter samples to obtain the mass of collected PM2.5 and PM10 samples. The maximum weight capacity of the XP-6 is 6 g, although most of our filters weigh around 50 mg. The quoted readability of XP-6 balance is 0.001 mg. Gravimetric Mass is completed in the Sample Handling Lab by AQRC staff. 

 

Image: photo of Mettler Toledo microbalances in a lab environment.