# Correction equation for newer generation hardware?

**URL:** <https://community.purpleair.com/t/correction-equation-for-newer-generation-hardware/22914>\
**Category:** Sensors\
**Created:** [September 7, 2026, 2:42am UTC](https://community.purpleair.com/t/correction-equation-for-newer-generation-hardware/22914 "2026-09-07T02:42:54Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![heroic](https://avatars.discourse-cdn.com/v4/letter/h/a6a055/32.png) [@heroic](https://community.purpleair.com/u/heroic)\
**Post date:** [September 7, 2026, 2:42am UTC](https://community.purpleair.com/t/correction-equation-for-newer-generation-hardware/22914/1 "2026-09-07T02:42:54Z")

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Hi all,

In researching a particulate matter sensor to purchase I started heavily considering purpleair sensors. Doing a bit of research, I found the Karoline Barkjohn paper about the correction equation that can be applied to the sensor data to get a more accurate reading from the sensors. Reading through the paper though, I only see reference to the study being done on the Plantower PMS-5003 and the Bosch BME280 which is the hardware on the purpleair classic devices. The Flex and Zen use the PMS-6003 and BME688, but I haven’t seen anything around suggesting that a similar correction equation has been developed for this pair of hardware.

Has there been newer research that applies to the newer hardware that I just haven’t come across? Am I going to be getting more accurate data if I get the purpleair classic and use the correction equation for that hardware as opposed to the Zen/Flex with no correction equation since one hasn’t seemingly been developed yet?