This article from Fierce Electronics discusses Piera Systems family of Intelligent Particulate Matter Sensors and how they can be used to measure Air Quality for many applications . Initially called the Piera-1 we have created a family of devices which are Software-Defined. They have superior accuracy, resolution to existing low cost sensors, calculate PM size, count and mass concentration and allow you to select the best price/performance specifications for your product. Our flagship device, the Piera-7100 with 7 Particle Size bins is used in our Canāree Air Quality Monitors and is capable of classifying sources of PM such as vape, smoke, etc.