| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| midol | "some PMS5003 distributors specify that Mie scattering is used " | Read more » | almost 6 years ago | |||
| warren | "I agree, i think it's laser scatter -- you can read @guolivar's post here for a bit more! https://publiclab.org/notes/guolivar/01-08-2018/thoughts-..." | Read more » | almost 6 years ago | |||
| Ag8n | "The purple air monitors have a low r2 value for the pm10 testing. This may lead to the skewing that you are talking about. I corresponded with th..." | Read more » | about 6 years ago | |||
| guolivar | "As far as I know Plantower hasn't disclosed that (to be fair, I don't think any of the low-cost manufacturers has done either). From the field test..." | Read more » | about 6 years ago | |||
| jeffalk | "I could be wrong but I do not believe optical particle counters use spectroscopy as the method is usually described. At any rate a number of years..." | Read more » | about 6 years ago |