Facts about CFL's

FACT SHEET ON THE SAFETY AND USE OF COMPACT FLUORESCENT LIGHTS (CFLs)

This fact sheet is intended to answer the most common questions about the safety and use of CFLs:

How much mercury is in Compact Fluorescent Lights?
A CFL contains a small amount of mercury that is necessary to produce the light, roughly the equivalent of the tip of all ballpoint pen or about one-fifth of the mercury found in a wristwatch battery. The chart below compares the mercury content in a CFL to other household items.

    Product Amount of Mercury Number of Equivalent CFLs
    Compact fluorescent lamp 5 milligrams 1
    Watch battery 25 milligrams 5
    Home thermometer 500 milligrams – 2 grams 100 – 400
    Float switches in sump pumps 2 grams 400
    Older manual home thermostat 3 grams 600

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