For flasks, round bottom. Designed identical to series KM-G, but the heating element is made of heat-resistant quartz yarn which permits a maximum temperature of 900 °C. 1.5 m power supply (earthed) cable with heating-zone switch and residual-current circuit-breaker. Mains supply: 230 V AC. For flasks, round bottom. Designed identical to series KM-G, but the heating element is made of heat-resistant quartz yarn which permits a maximum temperature of 900 °C. 1.5 m power supply (earthed) cable with heating-zone switch and residual-current circuit-breaker. Mains supply: 230 V AC.