To help you calculate the picograms of mercury per lumen hour — pg/lu-hr for lighting systems in facilities considering LEED-EB certification, Philips Lighting has created this unique combination worksheet and calculator. A rating below 90.00 is considered to be in compliance with the LEED-EB certification standards. If you are not doing LEED-EB this calculator is still a great tool to reduce overall lamp mercury content.
Simply name an area within your facility. Select the brands and types of lighting used in that area. Enter the number of fixtures for each type and hit the "Calculate" button.
Add more areas until you've covered the entire facility. Then click on "Finish Calculations." A summary report will appear, complete with buttons that will print out a LEED-EB friendly version of the information.