Lesco OLB1001 - 2 x 3mm ID x 5mm OD x 1000mm Length - Dual Liquid Light Guide Bulb Code_GPH1067T5/HO/4P-Cell and they maintain their lumen

and they maintain their lumen output

This product is an Atlantic Ultraviolet 27-1402 Flow Control: 3 GPM 3/4" PVC Male NPT S17 & MP16 & MIN-3

Food Processing

This product is an American Ultraviolet GML220 OEM replacement UV germicidal bulb

American Ultraviolet Triple 3mm ID X 5mm OD X 1ML Fiber Optic Light Guide

Lesco OLB1001 - 2 x 3mm ID x 5mm OD x 1000mm Length - Dual Liquid Light Guide Bulb Code_GPH1067T5/HO/4P-Cell and they maintain their lumenAmerican Ultraviolet 2 x 3mm ID x 5mm OD x 1000mm Length Dual Liquid Light Guide. American Ultraviolet's Lesco UV division offers Liquid Filled (LF) and Fiber Optic (FO) lightguides. FO guides, like the proprietary FibreFire line, are ideal for use with the SuperSpot MAX and MAX HP. Long lasting, and capable of very long run lengths, FibreFire is available in single, bifurcated, trifurcated or quad splits; and a wide range of standard round, oval,