# How to access "CO2-equivalent" measurements

**URL:** <https://community.purpleair.com/t/how-to-access-co2-equivalent-measurements/5425>\
**Category:** Data\
**Created:** [July 6, 2023, 8:13pm UTC](https://community.purpleair.com/t/how-to-access-co2-equivalent-measurements/5425 "2023-07-06T20:13:27Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![BlueJaySon](https://sea2.discourse-cdn.com/flex020/user_avatar/community.purpleair.com/bluejayson/32/3002_2.png) [@BlueJaySon](https://community.purpleair.com/u/BlueJaySon)\
**Post date:** [July 6, 2023, 8:13pm UTC](https://community.purpleair.com/t/how-to-access-co2-equivalent-measurements/5425/1 "2023-07-06T20:13:27Z")

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The BME688 ([Gas sensor BME688 | Bosch Sensortec](https://www.bosch-sensortec.com/products/environmental-sensors/gas-sensors/bme688/)), which is used in the PurpleAir Touch Indoor, says that it also estimates CO2 ppm:

 ![image](https://us1.discourse-cdn.com/flex020/uploads/purpleair/original/2X/a/a52f3b4b7240d1f5c6b6eaff4720b2ddd3339d7c.png)

Is there a way to access this estimated CO2 data?

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**Author:** ![chrisp](https://sea2.discourse-cdn.com/flex020/user_avatar/community.purpleair.com/chrisp/32/3030_2.png) [@chrisp](https://community.purpleair.com/u/chrisp)\
**Post date:** [July 9, 2023, 11:24am UTC](https://community.purpleair.com/t/how-to-access-co2-equivalent-measurements/5425/2 "2023-07-09T11:24:35Z")

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I don’t believe so because that BME688 is taking an aggregate measurement of VOCs and it’s a beta feature of the chip and the PurpleAir setup.