Color comparison digestion tube

A color comparison digestion tube belongs to the measurement or analysis device technical field. The utility model provides a color comparison digestion tube which can simultaneously accomplish the operation of digesting and comparing color, and is convenient to operate, reasonable in structure and suitable for various chemical reagents. The technical proposal of the utility model is that: the tube consists of a tube body and a screw cover; the tube body is a glass test tube which has even texture, the diameter of 10-20 mm and the height of 110-150 mm; the screw cover is arranged on an upper opening of the tube body; a sealing pad is arranged inside the screw cover; a vertical positioning line is marked at the top end of the tube body. The color comparison digestion tube with the structure can seal samples inside the tube body for carrying out high temperature digestion, and can directly carry out color comparison measurement to the tube body after digestion is accomplished. The color comparison digestion tub