Cuvette for abeyance bevel

The utility model discloses a test tube used for shelving inclined plane, belonging to the technical field of biological experiment equipment. The test tube includes a semispherical bottom and a cylindrate side wall, wherein, a position line is arranged on the cylindrate side wall of the test tube. The position line is constitutes by, from top to bottom, an inclined liquid-level top position line, a vertical liquid-level position line and an inclined liquid-level bottom position line. The utility model is for shelving the best inclined plane that meets the requirement, which means the inclined plane covers the semispherical bottom of the test tube, meanwhile, the length of the inclined plane reaches approximately to one half of the length of the cylinder part. Through the position line arranged at the corresponding place of the ordinary test tube, the utility model can indicate the optimal dose of the solid substrate that should be added to the test tube when the inclined plane is shelved. At the same time, t