Compatibility of radio-electronic equipment. Interference caused by industrial and information technology equipment. Limits and test methods. (EN 55022:1998)
State system for ensuring the uniformity of measurements of the Republic of Uzbekistan. The procedure for conducting the operational, static and arbitration control of the results of quantitative chemical analyzes of geological samples
State system for ensuring the uniformity of measurements of the Republic of Uzbekistan. State metrological supervision of the quantity of the goods exchanged during trading operations. Basic provisions and procedure