G13 10 58w lumilux t8 fluorescent bulbs osraml bulbs in lumilux and basic light colours have an up to 10 less power usage compared to earlier l bulbs with 38 mm diameter they are designed for operation on conventional electronic ballast devices with starters and on evg quicktronic in the starter switch these bulbs can be used with the standardized electronic ballast and recommended compensation capacitorscolour reproduction index 89the 36 w design with 1 m length is also available