Glasco UV 1351 Replacement UVC Light Bulb Model Number_CE-30-2H you can find it by

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Specimen Distance from Light Source: Adjustable from 3 to 10 inches

The replacement light bulb has a life span of 10

Drawing of Replacement UVC Bulb Item # 194535

Glasco UV 1351 Replacement UVC Light Bulb Model Number_CE-30-2H you can find it bySingle Pin Double Ended 75 Watt Germicidal Water Treatment Bulb The Glasco UV 1351 Replacement UVC Light Bulb is a single pin double ended light bulb that has lamp wattage of 75 Watts. The UVC light bulb has a total length of 61. 22" and an arc length of 58. 66". The light bulb has a peak output of 253. 7nm that is designed to kill the microorganisms present in water. The replacement bulb has to be replaced annually even if it continues to emit light.