With a range of products NARVA COLOURLUX PLUS-XT EXTENDED LIFE T5 NARVA offers an ideal solution for applications where relamping is particularly difficult and therefore associated with high costs. Lifetime XT lamps in luminaires with electronic ballast for a warm start is 40,000 hours. At the same time there is a financial savings in the purchase and maintenance, as one lamp NARVA EXTENDED LIFE replaces for its long service life at least 2 Tri-band fluorescent lamps COLOURLUX Plus. Lifetime of lamps with EXTENDED LIFE is even longer in comparison with LED tubes, but the tubes reach much higher specific output, higher efficiency energy savings and can be dimmed.