8.5.0 (2025-07-08)
Opentrons App Changes in 8.5.0
Welcome to the v8.5.0 release of the Opentrons App! This release features the ability to run protocols that use liquid classes to improve pipetting accuracy.
New Features
- The app now supports running protocols that use liquid class features in the Python API, including Opentrons-verified and custom liquid class definitions.
Bug Fixes
- Fixes errors (code 422) when performing Labware Position Check on an OT-2.
- Error recovery now provides the correct options when a blowout causes an overpressure error.
Opentrons Robot Changes in 8.5.0
Welcome to the v8.5.0 release of the Opentrons robot software! This release features the ability to pipette more accurately by using liquid classes in your protocols.
New Features
- Use Opentrons-verified liquid classes (aqueous, viscous, and volatile) in the Python Protocol API to automatically adjust submerge speed, flow rate, touch tip, air gap, and more.
- Customize and create your own liquid classes for even more control.
Improvements
- Several Python API methods have new parameters that add capabilities available in Protocol Designer.
Bug Fixes
- The Absorbance Plate Reader no longer reports measurements below 0.