Meteorological Act Article 20

The exclusive observation station, installing specified types of instruments, shall apply to the CWA, or a laboratory accredited by the Chinese National Laboratory Accreditation (hereinafter referred to as CNLA), or a laboratory accredited by an internationally cross-recognized foreign country, for validation of calibration of said instruments prior to use.Each exclusive observation station utilizing calibrated instruments, shall apply to the CWA, or a laboratory accredited by the CNLA, or a laboratory accredited by an internationally cross-recognized foreign country, for periodic validation of calibration of said instruments in use.Should any exclusive observation station be in violation of the preceding two paragraphs, using instrument(s) without calibration or fail to pass the calibration, the CWA shall order that station to stop using the instrument(s) and send for a calibration within a specified time frame. Should the station not follow the order, the CWA shall revoke the approval.A laboratory accredited by the CNLA, as mentioned in Paragraph 1 and Paragraph 2, is defined as one accredited by the accreditation system conducted by the Bureau of Standards, Metrology, and Inspection, Ministry of Economic Affairs.The category of observing instruments that need calibration as described in Paragraph 1 and Paragraph 2 shall be enacted by the CWA.The regulations governing the calibration cycle for each of the instruments in compliance with the preceding paragraph, application procedures for calibration, the criteria of the calibration, and other relevant issues regarding calibration procedures shall be enacted by the MOTC and the Ministry of Economic Affairs.