The volume of brine excluded from growing sea ice and its salinity were measured using a brine sampler. The measurements were made, in both laboratory and field, under various growth conditions of the sea ice. The salinity of the brine becomes higher, and the volume flux decreases as the sea ice growth rate decreases. Consequently, the salt flux of the brine decreases with decreasing growth rate. In the case of sea ice growth at a constant rate as the sea ice becomes thicker, the salinity of the brine excluded increases while its volume flux decreases. However, the salt flux is nearly independent of the ice thickness increase, at least up to a thickness of 15 cm. For sea ice growth rates between 1.7¿10-5 and 1.4¿10-4 cm s-1, and for a seawater salinity of 33.0%0, the brine salinity ranged from 42.3%0 to 92.7%0, the volume flux ranged from 6.3¿10-6 to 3.4¿10-5 cc cm-2 s-1, and the salt flux ranged from 6.4¿10-7 to 1.5¿10-6 g cm-2 s-1.