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1. Which measuring instruments in the water plant are required to be inspected by the state?
In the "Catalogue of Measuring Instruments for Compulsory Inspection by the State", various important measuring instruments are included, which play a key role in the daily operation of the water plant.. These mandatory calibration measuring instruments ensure the accuracy and reliability of water quality monitoring, testing, and treatment processes in the water plant. Specifically, the mandatory calibration measuring instruments that water treatment plants need to pay attention to include laboratory drying ovens, scales, drying ovens, and conductivity meters. Drying oven is used for sample drying treatment to ensure the accuracy of laboratory results. A balance is used to weigh various reagents and samples, and is the basis for accurate laboratory testing. The drying oven is used for constant temperature drying treatment of samples to ensure the consistency and accuracy of laboratory results. Conductivity meters are used to measure the conductivity of water, in order to evaluate its purity and treatment effectiveness. The accuracy and reliability of these devices are directly related to the water quality safety of the water treatment plant. Water treatment plants must regularly calibrate and calibrate these measuring instruments to ensure that they are always in optimal condition during operation. Regular calibration and verification can not only improve the accuracy of measurements, but also timely detect potential problems with equipment, avoiding measurement errors caused by equipment failures. Therefore, the water supply plant should establish a comprehensive management system for measuring instruments to ens

2. Is there a charge for unqualified safety valve verification?
Generally, safety valve verification is conducted once a year~! Unqualified products will not be charged! The special inspection center will call you back and tell you that you need repairs~! Repair costs money! The safety valve is subject to mandatory inspection! Belonging to safety protection~! According to Article 9 of the

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