Frequently Asked Questions

Gas Chromatography Accessories

• What ferrules do I use with my column?
  
• How do I connect a fused silica guard column to a fused silica GC column?
  
• Why can’t I get my Press-Tight® Connector to seal?
  
• What is a Drilled Uniliner® inlet liner?
  
• I need a fitting to…
  
• What liner do I need for…?
  
• Which injector part is the shell weldment and which is the weldment?
  
• Why shouldn’t I use liquid leak detectors?
  
• What septa should I use?
  
• Why does Restek’s stainless steel tubing look like copper?
  
• What are the advantages of the EZ-No-Vent™ GC Column-Mass Spectrometer Connector?
  
• What is the function of the critical orifice in the EZ-No-Vent™ GC Column-Mass Spectrometer Connector?
  
• Can I use my 0.25mm ID column with a Press-Tight® Connector?
  
• How do I clean my injection port liners?
  
• What gases will my Leak Detector™ detect?
  
• Can an MXT® Union be used to connect fused silica capillary columns with different IDs?
  
• What syringe needle point styles are available?
  
• I cannot tell if this is the syringe I want. What do all the letters mean?
  
• How can I tell when my Model V syringe valve is open or closed?
  
• Why is my quartz liner white?
  
• Can base-deactivated liners be re-deactivated?
  
• What is the difference between angled and regular Press-Tight® Connectors?
  
• What fitting do I need to remove a gas sample from an NPT outlet (such as from a regulator) with a syringe?
  
• Should there be an O-ring between my SGT filter (cat# 22060 or 22062) and the baseplate it is mounted on?
  
• Can Restek provide replacement filters and catalyst towers for Parker Zero Air Generators?
  
• What cleaning process is used for Restek’s precleaned copper tubing (cat# 21590 and 21592)?
  
• Could a Viton® O-ring bleed fluoranthene and pyrene?
  
• How do I install a column in my Agilent 6890 instrument?