Gilson offers many different types of probes and tips to allow you to select the design that best fits your application. Gilson's broad array of probes and tips provides solutions for all of your liquid handling needs.

Tip Design	Description	Comments
Flat	The tip is cut perpendicular to the length of the probe.	• Aspirates the last drop of liquid • Non-piercing • No injection
Constricted	The bottom part of the probe has a smaller inner diameter than the rest. Constricted-tip probes may have different tip designs. For example, a probe may be constricted and beveled.	• Compatible with injection ports
Beveled	The tip is cut at an angle, leaving the bevel.	• Sharp tip enables septum piercing • Compatible with injection ports
Vented	Two styles: 1. A shallow grove cut in the probe shaft, above the tip (shown at left) 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
Side-entry	The liquid flowpath opens on the side of the probe, not at the tip.	• Recommended for thick septa • Prevents coring of septa • Compatible with injection ports
Deflected	Based on the beveled tip design. The probe tips is curved and very sharp.	• Septum-piercing • Tip pushes septa out of the way as it pierces to prevent coring • Compatible with injection ports
Conical	Designed for PEEK injection ports.	• Capable of piercing thin septa • Used only on the Micro 215 Injector and 235 Autoinjector • Aspirates the last drop of liquid