About Brightness
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About Light Appearance
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About Replacing Tubular Fluorescent Light Bulbs
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Bi-Pin Base Tubular Light Bulbs
Brightness is measured in lumens; the higher the lumens, the brighter the bulb. Color rendering index (CRI) is a measurement on a scale of 0-100 of how accurately the light from a bulb represents an object's true colors; the higher the number, the more natural the colors appear. Any CRI value over 80 will show colors true to life. Bulbs with a warm light appearance have yellow tones. Bulbs with a neutral light appearance are often used in workspaces. Bulbs with a cool or daylight appearance have white/blue tones and are good for inspecting. A bulb’s estimated yearly cost is based on 3 hours of usage per day at $0.11 per kWh.
Fluorescent bulbs are energy efficient, but they contain small amounts of mercury (for disposal information, visit www.epa.gov/cfl).
Bulbs that cannot be sold to the regions listed exceed local regulatory limits on mercury and/or do not meet local efficiency standards.
| O'all Lg. | Equiv. Fluorescent Bulb Wattage | Light Appearance | Brightness, lumens | CRI | Light Setting | Bulb Material | Light Technology | Wattage | Rated Life, hrs. | Est. Yearly Energy Cost, $ | Bulb Trade Number | Cannot Be Sold To | Pkg. Qty. | Pkg. | |
T8 Bulb (1" Dia.) | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 60" | 40W | Cool (4,100K) | 3,725 | 82 | Dimmable | Glass | Fluorescent | 40W | 30,000 | 4.82 | F40T8, FO40 | Canada | 6 | 0000000 | 0000000 |
| 60" | 40W | Cool (4,100K) | 3,725 | 82 | Dimmable | Glass | Fluorescent | 40W | 30,000 | 4.82 | F40T8, FO40 | Canada | 25 | 0000000 | 000000 |
Blacklight Blue Light Bulbs
Detect UV-reflective materials that are invisible to the naked eye with these bulbs. They contain a blue filter that absorbs the visible light they produce while allowing long wave ultraviolet (UV-A) light to pass through. They appear black when turned off. These bulbs are not for use in bug zappers. A bulb’s estimated yearly cost is based on 3 hours of usage per day at $0.11 per kWh.
Bulbs cannot be sold to the listed areas because they exceed local regulatory limits on mercury.
| O'all Lg. | Wattage | Brightness | Bulb Material | Color | Rated Life, hrs. | Est. Yearly Energy Cost, $ | Bulb Trade Number | Wavelength Type | Cannot Be Sold To | Each | |
T8 Bulb (1" Dia.) | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 48" | 40W | Not Rated | Glass | Blue | 7,500 | 4.82 | F40T8 | UV-A | Canada, VT | 0000000 | 000000 |