Fittings on all HPLC and UHPLC columns have 10-32 threads. However, you will find that fittings and columns from Waters, Rheodyne, SSI, and Gasukura have different seating depths, as shown below, even though the threads are still 10-32. Restek’s universal 10-32 PEEK column connectors and new EXP fittings will accommodate any of these configurations.
Fitting styles differ among various manufacturers, but all HPLC and UHPLC column fittings have 10-32 threads.
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Parker |
Valco |
Waters |
Rheodyne |
Swagelok |






