Gilson offers many different types of probes, probe tips and coatings to meet any and all application needs providing solutions for all liquid handling requirements. (Note: Teflon® coated probes are not compatible with liquid level sensing.)

For more information on selecting the appropriate probe for your Gilson instrument, please refer to the Gilson Probe Guide or call 608-836-1551.

Tip Design




The tip is cut perpendicular to the length of the probe.

  • Aspirates the last drop of liquid
  • Does not pierce septum
  • No injection


The tip of the probe has a smaller outer diameter than the rest of the shaft. Constricted-tip probes accommodate unique tip designs optimizing every application.

  • Compatible with injection ports


The tip is cut at an angle, leaving a bevel.

  • Sharp tip enables septum-piercing
  • Compatible with injection ports


Two styles:

  1. A shallow grove cut in the probe shaft, above the tip (shown).
  2. Two probes are assembled concentrically, creating two separate channels, the inner channel for liquid and the outer channel for gas.
  • Septum-piercing
  • Vent allows pressures inside and outside a sealed vessel to equilibrate as liquid is dispensed or aspirated


The liquid flow path opens on the side of the probe, not at the tip.

  • Recommended for thick septa
  • Prevents coring of septa
  • Compatible with injection ports
  • Not recommended with limited volume


Based on the beveled tip design, the probe tips is curved and very sharp.

  • Sharp-tip enables septum-piercing
  • Tip pushes septa out of the way as it pierces to prevent coring


Designed for PEEK injection ports.

  • Capable of piercing thin septa
  • Aspirates the last drop of liquid


Test tube