G13 10-58W LUMILUX T8 fluorescent bulbs - OSRAM brand L lamps in LUMILUX and BASIC light colours have up to 10 % lower power consumption compared to the earlier L lamps with 38 mm tube diameter. They are designed for operation on conventional ballasts with starters and on QUICKTRONIC EBs. In starter circuits, these lamps can be used with the standardised ballasts and recommended compensation capacitors. colour rendering index 89 Available in the following sizes: 15W / 16W / 18W / 30W / 36W / 58W The 36 W version with 1 m length is also available.