Service Discontinuation Notice

Due to parts obsolescence, factory repair services for the LI-6400XT will end on December 31, 2025. We will continue to offer factory recalibration, but factory repairs will no longer be available. If you have an LI-6400XT, we recommend that you schedule factory service for your LI-6400XT before December 31, 2025.

Service on the original LI-6400 ended in March 2018. LI-6400s that have been upgraded to the LI-6400XT are eligible for service until December 31, 2025.

Operating Instructions

Operating information and PDF instruction manuals.

Software Downloads

Software and firmware for the product.

Video Library

Watch videos for tips and tricks from the LI-COR technical support team.

All Documents

More technical notes, application notes, installation guides, and other documents.

Frequently Asked Questions

Answers to common questions.

Troubleshooting

Solutions that will keep you collecting the best data.

Factory Service and Recalibration

Factory calibration is an integral step in the manufacture and repair of all LI-COR measuring instruments.

About LI-6400XT Factory Recalibration

To request factory service or recalibration for a LI-COR instrument, request factory service or contact your local distributor. Service will be performed at our US office in Lincoln, NE USA, European office (LI-COR GmbH), or by your local distributor.