In the following work we propose a method for the regeneration of the sampling needle used in the Thermo Fischer Scientific Gas Bench II, part number 1137020.The introduction of the sample in the measurement system is one of the most important step for the realization of a good isotopic analysis. Today there are some devices in commerce that use special sampling needles, each developed by the manufacturer for its own needs. Almost all needles are connected to an auto sampler to automate sample collection. The auto­sampler is a mechanical arm that amplify the mechanical stresses due to the injection of the needle into the vials. These mechanical stresses can cause the curvature and consequent breaking of the internal capillary of the sampling needle. Frequently the breaking of the capillary lead to the replacement of the whole sampling needle with considerable operating cost. In this paper we propose an alternative method for the regeneration of the sampling needle, which consists in the use of cheap and easy tools.