Modern earthenware may be biscuit (or "bisque")[13][14] fired to temperatures between 1,000 to 1,150 °C (1,830 to 2,100 °F) and glost-fired[15] (or "glaze-fired")[4][16] to between 950 to 1,050 °C (1,740 to 1,920 °F), the usual practice in factories and some studio potteries. Some studio potters follow the reverse practice, with a low-temperature biscuit firing and a high-temperature glost firing. The firing schedule will be determined by the raw materials used and the desired characteristics of the finished ware.