Qingping Air Quality Monitor (Generation 2) Review - Is it Even Better?

[Ethan]

Hi, @rgeysbeek. Thanks for joining the forum! I’m glad you’re enjoying your monitor.

Honestly, it’s tough to tell exactly how the Qingping device works regarding eTVOC, as they’re not very transparent on the matter. If you’re curious to see a (very) long conversation about the topic, please feel free to check out this thread:

Air Quality Monitors for VOCs

Here is Qingping’s response: The method of obtaining the VOC index readings by Qingping air monitor 2 is the same as Sensirion, but the evaluation method is different. Since the Qingping Air Monitor 2 allows the VOC readings to be switched to mg/㎥ or ppb, we have a specific evaluation standard for mg/㎥ and ppb, which aligns with this scale. [Qingping VOC Index] So, in other words, Qingping’s index uses ‘absolute’ readings and follows a Chinese standard (found here: https://www.mee.gov.cn/…

However, based on the screenshot below, 90 should indicate that VOCs are increasing (compared to a relative baseline, which I assume must sit somewhere in the ‘good’ range). While the ppb reading is also not ideal (for reasons mentioned at the top of the thread I linked above), it’s probably a better measurement to get a general overall of your VOC levels in the longer term. The index is always adjusting, and therefore, isn’t good for identifying much other than decreasing, steady, or increasing levels of VOCs.