To use a labware definition from the Labware Library in a python file you can reference it via API name. You can easily copy the API name from any listing in our library by using the copy button. 

Definitions in the labware library are already pre-loaded on the robot. If you made a custom labware definition via labware.create() you will need to load the definition as a part of your protocol. Read more about labware and our API here

Protocol Designer

All labware in the labware library is already accessible in the Protocol Designer. When you click "Add Labware" while hovering over a slot in the deck you'll be presented with a list of labware to choose from. 

To add custom labware to a Protocol Designer protocol, you can import a definition you've made with our Labware Creator

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