ALTO® with GREEN endcaps has become synonymous with environmental responsibility and low mercury. Since the launch of ALTO Lamp Technology in 1995, 1.3 billion Philips fluorescent lamps with ALTO Lamp Technology have been produced with 20 tons less mercury than previous non-ALTO lamps. Now over 10 years later, Philips has gone one step further with the introduction of new ALTOII™ Technology. These lamps feature 50% less mercury (contains only 1.7mg of mercury) than the prior ALTO T8 lamps, making them the most sustainable linear fluorescents available.