Mini speaker study of mass conservation

This device allows to demonstrate the conservation of mass during a reaction. The flask can be placed on a balance, which allows real-time measurement of the mass and comparison of values before and after the reaction.
A three-way valve allows connecting a syringe to introduce a solution into the flask, thus creating a reaction safely for the user.

Glass container in white color of 60 mL Screw cap made of plastic with a tight junction equipped with a valve Valve allowing the injection of liquids via a syringe and ensuring the tightness of the container during the reaction Sealing between the valve and the screw cap ensured by a synthetic rubber seal Graduated plastic syringe of 10 mL connecting to the valve Delivered with instructions.