When using vortex mixer, please check whether the accessories of the whole machine are complete. Turn on the power switch and start working. At work, the solution in the test tube can be adjusted according to the pressure in your hand. Use test tubes and colorimetric tubes, and the solution should not exceed half. When a more uniform solution is needed, please use a triangular bottle. To ensure safety, please turn off the power supply after use and keep the instrument clean and dry. It is forbidden for the solution to enter the machine. So as not to damage parts.