Is the Laser Egg only accurate in Beijing?

ओह! यह पोस्ट हिन्दी में उपलब्ध नही हैं।अंग्रेजी संस्करण के हेतु यहाँ क्लिक करे l


The Sqair air purifier Kickstarter

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Can someone tell me which countries AQI standards is the laser egg2 plus set to? US?? China?? I mean (straight out of the box), without downloading any apps . Specifically the PM 2.5 . Thank you


I have a query.

Will the accuracy of the laser egg counter reduce with time? I mean if we keep using it, would it still show the readings with the same accuracy say 2-3 years down the line?
If no, is there a way to recalibrate it?


Hi there, Thanks for the clear explanation. I hope I knew this before buying my laser egg. I am currently living in Shenzhen, its always ranging from 75% to 100% humidity. The nearest station is 4.5 KM away. Although is not located inside a consulate, that makes me wonder whether I can trust the data published hourly. I compared outside laser egg meter (152 AQI) with the data provided by the station 76 AQI. I use the formula provided above and got a 100 AQI PM 2.5. Its rather confusing and I honestly dont know how to calculate the real… Read more »


I would like to better understand formula mentioned in the article.
I use Laser Egg in quite humid climate but I’m not sure how to implement your formula?

Let’s say Egg shows 100µg PM2.5 and it’s 75% humidity around.
How should I obtain right PM2.5 number? How to do the math?

Thank you for help!


I don’t understand this answer from Liam who made the LaserEgg (I assume this answer was given in the last couple of days, since this article is from yesterday):

“We’ve been working on this for almost two years and can say with confidence that the results people will be seeing are waaaay past anything else out there.”

What does he mean by “will be seeing”? the Laseregg 2 is already sold on the market for several months now, why is he talking like it will be released in the future? is he talking about the Laseregg 3 maybe?