A pharmaceuticals manufacturer was required to investigate the forces necessary to eject medications from various types of needles and syringes, and asked for our assistance in determining the best testing system configuration to perform the test. The purpose of this testing was to be able to collect force versus time data, as well as to determine the peak load and load values at specified points of plunger displacement. Other types of results often requested: the peak force (or "break-away force") that marks the force required to begin fluid ejection, and the average force (or "sustaining force") that marks the force required to maintain an even flow of fluid out of the syringe.
Our syringe testing fixture can accomodate a wide variety of syringe sizes. It uses an insert that is machined to match the syringe diameter. Several inserts can be used for a variety of syringe designs. A compression platen is mounted at the crosshead and is used to push the plunger and eject fluid. The fixture is compatible with any of our universal testing systems
and Bluehill® Software
is capable of both test control, and all results and calculations needed.