The national standard "GB/T 44276.1-2024 Microscope coverslips, Part 1: Dimensional deviation, thickness and Optical inspection characteristics" specifies the requirements for dimensional deviation, thickness and Optical inspection characteristics of Microscope coverslips in the visible Light spectrum range (400nm to 760nm). It is suitable for the design, manufacture and application of Microscope coverslips to ensure that the medium between the coverslip and the Microscope objective produces a good Optical inspection effect. The standard details the thickness deviation, length, width and diameter of the coverslip Dimensional deviation, as well as Optical inspection characteristics such as main refractive index and dispersion coefficient. The standard will be implemented on March 1, 2025 and will provide specifications for the production and use of microscope coverslips.