The complementary calibration block ships with an OT-2 purchase.
The Opentrons Calibration Block is a tool used during Tip Length Calibration and when leveling 8-channel pipettes. It provides a flat surface parallel to the OT-2’s deck that all pipettes can reach.
To use this Calibration Block with your robot, your Opentrons App and
OT-2 must be on software version 4.0 or higher.
If the Opentrons App does not prompt you to use the Calibration Block
during Tip Length Calibration, navigate to More > Advanced Settings:
Tip Length Calibration Settings. Select “Always use Calibration Block to
For more information about how and when to use the Calibration Block,