# How often does the NovaSeq 6000 wash flow cell need to be replaced? Replace wash flow cells when they become visibly worn. Contact Illumina Technical Support () for assistance replacing wash flow cells. Wash flow cells do not contain any chemistry, so consistent replacement is not necessary. As an alternative to a wash flow cell, a used S4 flow cell can be used as a wash flow cell. \ \ \
| | | :--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------: | | *For any feedback or questions regarding this article (Illumina Knowledge Article #2572), contact Illumina Technical Support* [*techsupport@illumina.com*](mailto:techsupport@illumina.com?subject=Question%2FFeedback%20Regarding%20Illumina%20Knowledge%20Article%20#000002572%20-%20Instrumentation%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/instrumentation/novaseq-6000/instrumentation-novaseq-6000-faq-list/000002572.md?ask= ``` 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.