One problem associated with syringe use is that traces of tungsten or tungsten residues can leave residue behind in the bore when the syringe cone is shaped. Especially for drug products based on biotech derived drug products, our customers therefore require prefillable syringes that ideally exclude the possibility of contamination with tungsten

With the development of an innovative production technology registered for patent, we have been able to address this requirement and create a metal-free 1 ml long Gx RTF^® Luer lock syringe that is ready for series production. This process can also be transferred to other Luer lock syringe sizes or to Luer cone syringes of various sizes at any time. The pin used to shape the cone with our new technology is not made of conventional tungsten or an alternative metal, but of a special ceramic. External studies confirm that we can manufacture residue-free syringes for the packaging of especially sophisticated medications with this new technology.

The Fresenius Institute conducted a study confirming that no ceramic residue can be detected in the syringe. A biocompatiblity study also verifies  that the ceramic material is not cytotoxic.