# Trouble updating OD calibration

**URL:** <https://www.evolver.bio/t/trouble-updating-od-calibration/539>\
**Category:** Software\
**Created:** [October 8, 2024, 2:11pm UTC](https://www.evolver.bio/t/trouble-updating-od-calibration/539 "2024-10-08T14:11:00Z")\
**Posts on this page:** 1\
**Showing post:** 4

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**Author:** ![bgwong](https://yyz1.discourse-cdn.com/flex035/user_avatar/www.evolver.bio/bgwong/32/262_2.png) [@bgwong](https://www.evolver.bio/u/bgwong)\
**Post date:** [October 11, 2024, 1:38pm UTC](https://www.evolver.bio/t/trouble-updating-od-calibration/539/4 "2024-10-11T13:38:26Z")

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There is an old post about it here:

> [@Deleting old calibrations](https://www.evolver.bio/t/deleting-old-calibrations/158):
>
> Hello! Quick silly question…once uploading new calibrations on the eVOLVER, we can then select the calibration we want to use directly from the touch screen interface or the eVOLVER software. But I was wondering how to remove old calibrations that are not useful anymore, to prevent somebody from using the wrong calibration by error… I hope this has not already been covered on the forum…looked for it but did not find. Thanks !

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_[View the full topic](https://www.evolver.bio/t/trouble-updating-od-calibration/539)._