GB/T 11848.6-1989 provides for the determination of fluorine in uranium ore condensates by ion selective electrode method. The standard details the required instruments, such as ion selective electrodes and supporting measurement devices. Describes the sample pretreatment steps to process the uranium ore condensed into a suitable test solution. Using the selective response of fluoride ion selective electrode to fluoride ion, the fluorine content in the test solution can be accurately calculated by measuring the potential value and combining the standard Linear dispersion method. The standard provides a reliable analytical method for the determination of fluorine content in uranium ore condensates, which helps to control the product mass and related process links.