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ssss1 New‐generation electronic LED cold light source CO2mbi LED.

Source: © KARL STORZ SE & Co. KG, Germany.

Xenon light sources still offer excellent tissue color reproduction with light closely approximating that of pure sunlight (5800 °K). However, LED technology is increasingly widespread because of its greater efficiency, longer lifetime, smaller size, and lighter weight. An LED bulb will last approximately 30 000 hours, or 30 times that of a xenon light bulb. One should consider having spare Xenon bulbs in stock, since light sources equipped with two bulbs are now less common for economic reasons [1–5, 13, 15].

When selecting a light source for multidisciplinary endoscopy services, including flexible endoscopy, one must consider the compatibility of the light source with the flexible endoscope connector. Flexible endoscopes for G.I. use typically have a connector with two male parts: the light post and a smaller diameter pipe that connects to an internal pump for insufflation and irrigation. Although the initial cost of a versatile, high‐power LED light source may be high, it could represent considerable savings later, minimizing the need for multiple dedicated units for different purposes.