With a colour of 5000K, Daylight, the 36W 4ft Philips MASTER TL-D 90 Graphica Pro is one of the leading fluorescent T8 tube light bulbs with a colour rendering which is 98% accurate. Fitted with a standard sized G13 2-pin (13mm apart) caps to both ends.Most commonly used in graphical, printing, photo industry and hospitals situations.For maximum performance and efficiency from your new fluorescent tube, we recommend you replace the fluorescent starter at the same time.Need more help in choosing a suitable fluorescent tube? Read our guide Choosing Flourescent Tubes and our guide to Flourescent Starters.