# Choosing a Library Loading Concentration for Illumina Sequencing Video

This video shows how to choose a library loading concentration by first checking the library prep kit and sequencing platform documentation, then explaining how to use the average library size to determine a starting loading concentration.

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{% embed url="<https://www.youtube.com/watch?v=ThsyHj_bgeM&ab_channel=Illumina>" %}

Video length: 3:06 min

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| *For any feedback or questions regarding this article (Illumina Knowledge Article #6959), contact Illumina Technical Support* [*techsupport@illumina.com*](mailto:techsupport@illumina.com?subject=Question%2FFeedback%20Regarding%20Illumina%20Knowledge%20Article%20#000006959%20-%20Library%20Preparation%20\&body=Dear%20Illumina%20Technical%20Support,%0D%0A%0D%0A)*.* |