# Library Prep Bead Handling Workflows Best Practices LNB1/2/3 (Video)

This video shows how to use LNB1/2/3 plus additives (LNA1) to normalize the quantity of each library to ensure a uniform library representation in pooled libraries.

[Library Prep Bead Handling Workflows Best Practices: LNB1/2/3](https://www.youtube.com/watch?v=B1vIxwX6D0s)

Video length: 07:40

\
\
\ <br>

|                                                                                                                                                                                                                                                                                                                                                                               |
| :---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------: |
| *For any feedback or questions regarding this article (Illumina Knowledge Article #10037), contact Illumina Technical Support* [*techsupport@illumina.com*](mailto:techsupport@illumina.com?subject=Question%2FFeedback%20Regarding%20Illumina%20Knowledge%20Article%20#000010037%20-%20Library%20Preparation%20\&body=Dear%20Illumina%20Technical%20Support,%0D%0A%0D%0A)*.* |


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://knowledge.illumina.com/library-preparation/general/library-preparation-general-reference_material-list/000010037.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.