• Free-Turn architecture lets you change cartridges by hand without breaking inlet/outlet fluid connections—no tools needed.
• Patented titanium hybrid ferrules can be installed repeatedly without compromising high-pressure seal.
• Auto-adjusting design provides ZDV (zero dead volume) connection to any 10-32 female port.
• Guard column cartridges require EXP direct connect holder (cat.# 25808).
• Pair with EXP hand-tight fitting (cat.# 25937–25938) for tool-free installation.

Additional Details

To help protect your investment and further extend the life of our already-rugged LC columns, Restek offers the patent-pending guard column hardware developed by Optimize Technologies. A Restek LC guard cartridge in an EXP direct connect holder is the ultimate in column protection, especially when using dilute-and-shoot or other minimal sample preparation techniques.