GC Column Unions and Splitters

Union and Splitters

Fused Quartz Y-Splitters

• Use for splitting a sample onto two columns (single injection confirmational analysis)
• Use for splitting column eluent to two detectors
• Provides leak-free seal without tools or fittings
• Stays sealed even at high temperatures and pressures
• Laser-cut smooth ends prevent column damage during insertion

Fused Quartz Press-Fit Unions

• Use for connecting a guard column to an analytical column, connecting columns of different selectivities, or connecting transfer lines (e.g. mass spec)
• Provides leak-free seal without tools or fittings
• Stays sealed even at high temperatures and pressures
• Laser-cut smooth ends prevent column damage during insertion

Polyimide Resin

• Permanently connects unions and splitters to capillary tubing
• Prevents connections from dislodging due to vibration or shock
• Available in standard (350 °C) and high temperature (400 °C)

Capillary Mini-Unions

• High-precision unions for connecting capillary GC columns of multiple sizes
• Inert and precise glass-lined bore
• Low dead volume
• Comes with 1 mini-union, 2 nuts, and 5 ferrules
• Available with Vespel/Graphite 85/15 % (rated to 350 °C) and SilTite (rated to 450 °C) ferrules