Thanks for the reply, probably a miniuture DC motor just to be used for shaking a 0.5kg liquid contained in up/down direction.
I also have another question; I am looking for a Solonoid valve antidrip system (the whole system) do you know where I can find them? Also I am not sure if the valve should be one way or two way valves in order not to get leakage from the valves (should I use two way valves to avoid leakage from the pipes connected to the valves)...Thank you
Bests,
Sara