Agilent Guard Columns

Dear team and forum, 

Hi, may I ask a question about compatible guard columns for preparative or semi prep columns in our lab please? We are thinking about buying guard columns for the following two columns

  1. Eclipse XDB-C8, 5um, 9.4*250mm
  2. Eclipse XDB-C18, 7 um, 21.2*250mm

 Are there any suggested guard column (with the right connection size) for of these two Agilent columns respectively?

Many thanks!

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