# What are your maximum OD's read using a batch method with e coli?

**URL:** <https://forum.pioreactor.com/t/what-are-your-maximum-ods-read-using-a-batch-method-with-e-coli/914>\
**Category:** Using the Pioreactor\
**Created:** [September 4, 2025, 7:19pm UTC](https://forum.pioreactor.com/t/what-are-your-maximum-ods-read-using-a-batch-method-with-e-coli/914 "2025-09-04T19:19:42Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![pioChip](https://forum.pioreactor.com/letter_avatar_proxy/v4/letter/p/9fc29f/32.png) [@pioChip](https://forum.pioreactor.com/u/pioChip)\
**Post date:** [September 4, 2025, 7:19pm UTC](https://forum.pioreactor.com/t/what-are-your-maximum-ods-read-using-a-batch-method-with-e-coli/914/1 "2025-09-04T19:19:42Z")

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We are getting far lower ODs in this than we typically get in shake flask and I was wondering how others were faring. We will move on to using air bubblers and fed batch methods soon, however we want to iron out any kinks before moving on. Thanks!