Philips Ceramalux High Pressure Sodium light bulbs have little or no lead in their glass or bases, and are produced with little or no mercury. Many of these HID products also offer additional features such as energy efficiency and long life, and are packaged using recycled and/or recyclable materials. Philips high pressure sodium lamps that are designated as ALTO pass the U.S. EPA's Toxic Characteristic Leaching Procedure (TCLP) test for hazardous waste determination.

These eco friendly Philips ALTO USA C7 C200S66/ALTO (36877) 200 watt High Pressure Sodium bulbs are primarily intended for use in enclosed luminaires. They have an initial lumens of 21,400, mean lumens of 19,260, and a rated average life of 24,000 hours based on 10 hours per start, with an ANSI Type S66. Featuring a clear 2100K super warm light, these Philips Alto HPS lamps come equipped with an E39 mogul base and have an ED18 bulb design.