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ProteCol PEEK Unions (222011)

Product Information

Product Type


ProteCol PEEK Unions (222011)

ProteCol PEEK Unions 0.36 mm to 0.36 mm (2 Unions & 4 PEEK Ferrules)


Perfect Connections, Every Time

ProteCol® HPLC unions are specifically designed and precision engineered for use in capillary LC. The ideal way to avoid any void or dead volume in a connection is to achieve a faultless butt connection.


Features and benefits

  • Zero dead volume design for no peak dispersion.
  • Easy to use.
  • Complete versatility – allows connection to the same or different sized tubing.
  • Available in PEEK and stainless steel.
  • Stainless steel unions can be finger tightened or tightened with a 3/16″ wrench for high-pressure applications.
  • PEEK unions can be finger tightened. They are slightly larger than stainless steel unions but also lighter – less stress on your tubing.


Recommended applications

ProteCol unions and reusable PEEK ferrules allow you to connect any combination of:

  • 1/32″ PEEKsil®.
  • 1/16″ PEEKsil.
  • 0.36 mm fused silica tubing. Use for connecting guard or trap columns to analytical columns, or for bypassing the analytical column.