The SH/T 0173-1992 (2004) standard specifies the technical conditions for Glass Capillary Viscometers, which are mainly used to determine the viscosity of petroleum and its products. The standard applies to different models of Glass Capillary Viscometers, including BMN-1, BMN-2, BMN-3 and BMN-4, and describes in detail the specifications, size and shape requirements of each model. The standard emphasizes the mass of the manufactured material and requires the use of smooth and transparent Instrument Glass or High Shed Glass to ensure the accuracy and Reliability of the Viscometer. In addition, the standard also specifies the calibration method and test environment to guarantee the conformity and repeatability of the test results. This standard provides an important technical basis for the Petrochemicals industry, ensuring the control and evaluation of product mass.