What is the difference between a low and high pressure union in HPLC – FAQ

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ARTICLES, APPNOTES, FAQ (9281)
- AppNotes Library (1888)
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August 26, 2024
Bill Ciccone

ARTICLES, APPNOTES, FAQ / Chromatography Accessories & Supplies Information / Column Hardware FAQ / Fittings & Tubing for HPLC FAQ / Fittings Connectors Nuts Ferrules Information / Frequently Asked Questions?? / HPLC Column Information / HPLC Tips and Suggestions / Tubing Information / Unions

Key Difference in Ferrule and Nut Seating for Tubing Connections

The primary distinction lies in the seating of the ferrules and nuts within the port where the nuts connect the tubing to unions or adapters. It is crucial to match the pressure rating of the components:

Low Pressure: Use low pressure unions or adapters with low pressure nuts and ferrules.
High Pressure: Use high pressure unions or adapters with high pressure nuts and ferrules.

Click HERE for HPLC fittings ordering information and pictures.

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