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.

Philips 200W ALTO USA C7 C200S66/ALTO (36877) High Pressure Sodium bulbs are intended primarily for use in enclosed luminaires. Initial Lumens 21,400, Mean Lumens 19,260, Rated Average Life 24,000 Hours based on 10 hours per start, ANSI Type S66. These Philips Alto HPS lamps employ a mogul base and are designed with an ED18 bulb.

Philips 36877 High Pressure Sodium Lamps C200S66/ALTO ED18 200W Mogul Clear Ceramalux ALTO bulbs are identified by the ALTO icon in their product codes and on their packaging. These TCLP passing ecologic lamps include some of the most popular Philips Alto lamps available.