Double-capped LED lamps designed to retrofit linear fluorescent lamps. Safety specifications|Type testing, Tubular lamps, Definitions, Electric lamps, Fluorescent lamps, Rated power, Lamps, Voltage, Lamp caps, Power factor, Endurance testing, Marking, Starters (lamps), Cathodes, Discharge lamps, Electric power (wattage), Electrical testing, Ratings, Rated voltage, Chromaticity, Statistical quality control, Dimensions, Colour, Sampling methods, Electric current, Lighting equipment, Electric ballasts, Luminance