| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| guolivar | "Short answer is NO ... longer answer is still no but with some reasons behind. In general the EPA (and any other regulatory body) needs A LOT of c..." | Read more » | almost 3 years ago | |||
| guolivar | "Thanks for the heads up @liz I've been working in air quality research for 20 years and I am yet to find a reliable "low-cost" NO2 sensor. There a..." | Read more » | almost 3 years ago | |||
| guolivar | "I'm sorry but as usual the time difference kills me. I could potentially listen in but at that time I cannot join the discussions (I'm too busy get..." | Read more » | about 3 years ago | |||
| guolivar | " The particle size distribution (mass, volume or number) is very variable and even though "on average" it's fairly stable, the day-to-day variabili..." | Read more » | almost 4 years ago | |||
| guolivar | "Short answer ... No. Long answer ... Absolutely no! I'll try to explain why, even though it sounds possible, the uncertainties are so large that t..." | Read more » | almost 4 years ago | |||
| guolivar | " Quickly to your question of: For example, the first 6 are two sets of PM1, PM2.5, and PM10 concentrations. the first set are labeled "standard", w..." | Read more » | almost 4 years ago | |||
| guolivar | " All the way in New Zealand we also use Gradko for all our passive tubes needs. " | Read more » | about 4 years ago | |||
| guolivar | "Following on @jeffalk answer, please expand on your question. In my opinion (and I've worked in aerosol science for a number of years) the main poi..." | Read more » | over 4 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 » | over 4 years ago | |||
| guolivar | "Here is a page about the PMS5003 and 7003 ... https://aqicn.org/sensor/pms5003-7003/ The difference seems to be in their internal layout. In that ..." | Read more » | over 4 years ago | |||
| guolivar | "Great work @sagarpreet! This might get rambly because there is no right answer but I'll try to explain why and what then. The first thing you nee..." | Read more » | almost 5 years ago | |||
| guolivar | "The description of the operating principle can be misleading. Optical particle measurements rely on intensity of scattering rather than "amount of..." | Read more » | about 5 years ago | |||
| guolivar | "Some colleagues from Australia have been working on AirRater (https://airrater.org/) and we're working towards adapting it for specific projects. I..." | Read more » | about 5 years ago | |||
| guolivar | "I tried to put a long answer here but it kept throwing errors so I wrote a note with my thoughts on this issue: https://publiclab.org/notes/guoliv..." | Read more » | about 5 years ago | |||
| guolivar | "The question if "which model is best" is not easy to answer as it is always dependent on what the results are used for. There have been a few studi..." | Read more » | over 6 years ago |