How would you like if your new syringe pump pumps like this? Here a 60 ml syringe with a rubber based plunger sealing is set to pump 15 ml/h. It takes 4 hours to empty the syringe. The set-up is degassed and has no compliance in the tubing, which otherwise would dampen the flow pulsations.

The graph shows the delivered amount of water over time measured using a newly developed dynamic gravimetric flow tester with 10 Hz output. METAS and DTI are currently working on harmonizing and comparing dynamic microflow measurements to be able to provide you with the information you need to select a syringe pump suitable for your application. Many interesting facts have already been found, e.g. did you know that some syringe pumps are more reliable emptying the second half of the syringe, compared to the first half?

Many more measurements are still to be performed, next the performance with an inline flow meter will be tested, making the evaluation more robust having flow measurement data from both the flow meter and the dynamic gravimetric flow tester at the same time.

For more information please contact Claus Melvad (DTI) or Hugo Bissig (METAS).