Are Cheap Particle Counters Accurate?

Hello , did you test the uHoo?

interesting, but so much more instruments to test to get a good idea

Great review – thanks for leaving this! I wanted to add some details on the LaserEgg – we recently purchased the 1gen sensor to supplement our 3 Mi 2s filters, which in our experience are great at moving air through a filter but have generally inaccurate readings that make ‘auto mode’ practically useless. Since I began using the LE, however, I’ve found its weakness is the Kaiterra app, which is very bare-bones. Not only does it not interact with other devices, but you cannot even set alerts in the app for when AQI hits a certain level. The Without some… Read more »

Hi, is Wifi required for these counters?
If Wifi is on, can’t they just search your location and get the “official” readings for your area to improve average accuracy.

I understand you did a test with cigarette particles, but it seems many sensors are accurate when it comes to cigarette particles, but not necessarily with all types PM2.5 particles.

For example here is a cheaper sensor that seems to pick up cigarette particles pretty accurately:

https://www.youtube.com/watch?v=cBJWWbxChds&lc=z22juhvappqiufvzl04t1aokgwfhhyg14q03jw4dknrfbk0h00410.1534648389218361

But I’m still skepticle PM2.5 paricles are being measured properly.

Thank you!