The calibration work of glass thermometers must follow relevant regulatory standards and industry specifications, which are important bases to ensure the legality, compliance and accuracy of the calibration work.
At the regulatory level, each country has formulated corresponding metrology laws and regulations, clarifying the management requirements for the calibration of measuring instruments. For example, the "Metrology Law of the People's Republic of China" stipulates the scope of compulsory verification and management methods for measuring instruments. As a common measuring instrument, glass thermometers need to be calibrated regularly according to the regulations when they are used in aspects such as trade settlement, safety protection, medical and health, and environmental monitoring. These regulations ensure the standardization and seriousness of the calibration work of measuring instruments and maintain market order and public interests.
From the perspective of standards, there are a series of international standards that standardize the technical requirements and operation processes of glass thermometer calibration. For example, the international standard ISO 7504 "Industrial glass thermometers - Technical requirements and test methods" specifies in detail the design, manufacture, performance requirements, calibration methods and uncertainty evaluation of glass thermometers. There are also corresponding national standards in China, such as GB/T 1216 - 2008 "Outside micrometers", which clearly stipulate the specific operations and technical indicators of glass thermometer calibration. These standards provide a unified technical criterion for glass thermometer calibration, making the calibration work of different regions and institutions comparable and consistent.
Industry specifications put forward more targeted requirements for glass thermometer calibration according to the characteristics and needs of different industries. For example, in the pharmaceutical industry, according to the "Good Manufacturing Practice for Pharmaceutical Products" (GMP), the calibration of glass thermometers not only needs to meet the general metrology standards, but also comply with the special requirements in the pharmaceutical production process, such as strict regulations on the calibration cycle and detailed preservation of calibration records, to ensure that the temperature control in the pharmaceutical production process meets the quality standards.
