Liquid preparation device

The utility model provides a liquid preparation device which is used for preparing at least two liquid reagents according to a preset volume ratio. The liquid preparation device comprises a plurality of liquid preparation test tubes arranged in a row and a bracket for placing the row of liquid preparation test tubes. Wherein each liquid preparation test tube comprises a test tube body and at least one partition plate positioned in the test tube body. The main body of the test tube body is a transparent hollow cylindrical tube body. The partition plate is a flat plate and equally divides the volume of the part, spaced by the partition plate, of the test tube body, and each equal part is provided with scale marks indicating the volume of the equal part. The support comprises a base, two supporting columns extending upwards from the two ends of the base and a rectangular frame beam. A row of test tubes are placed on the support, and the included angle between the axis of the test tube body and the vertical direc