CFL Bulbs

CFLs (Compact Fluorescent Lamps) are energy-saving bulbs consisting of a fluorescent tube that has been made into a shape the same size as a traditional incandescent light bulb.

How does a CFL work?

CFL Bulbs contain gases that are given an electric current, generating UV light which then excites the gasses. A phosphorous layer is then produced on the inside which glows, giving off light. There is very little heating involved.

What shape are CFLs?

Compact fluorescent light bulbs come in various shapes, such as:

  • Candle bulbs represent the shape of a flame, with a pointed tip, and are often used in decorative fixtures, especially slimmer designs that can't accommodate a globe or spiral bulb.
  • Globe bulbs are spherical shaped and are often used in vanity mirrors and bathroom pendants. They may take longer to reach full brightness but will become as bright as other CFLs.
  • Spiral bulbs have a fluorescent tube that is shaped into a spiral curve. This is the most common CFL bulb shape, producing the same amount of light as an incandescent bulb.
  • Stick or tube bulbs usually consist of multiple tubes which are straight. Like candle bulbs, they are commonly used in slimmer lighting fixtures.

What colour are CFL bulbs?

CFL light bulbs come in many variations of white. They are most commonly classed as "Cool White" or "Warm White", which describes the colour temperature of the light that the bulb emits. Colour temperature is a measurement of the light output, given in Kelvin (K). The higher the value, the cooler the white. For example, 5000K would be cool white lighting.

CFL Bases:

The base of the bulb depicts what fitting it pairs with. CFL lamps usually have a push and twist bayonet or Edison screw base, both of which are available in various sizes.

Why choose a CFL bulb?

Fluorescent bulbs are designed to be more energy-efficient than incandescent or halogen bulbs. They have a very low energy consumption which also saves money on electricity bills, over time. CFL bulbs have a much longer lifetime too, of up to approximately 10 years. The lifetime of the light bulb will be stated in hours.

What is CFL Equivalent Wattage?

Although CFLs do not use the same technology as incandescent bulbs, they are often given a comparable wattage value, providing an easy comparison to the equivalent wattage.


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RS-artikelnummer 829-3483
VarumärkeRS PRO
117,89 kr
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U Tube 13 W - - - - - - - - - - - B
RS-artikelnummer 792-6817
Tillv. art.nr4050300025759
VarumärkeOsram
41,54 kr
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Quad Tube 11 W G23 237 mm 3000K - Warm White 89 830 27mm 2 900 lm 10000h A
RS-artikelnummer 669-2939
Tillv. art.nr4050300006017
VarumärkeOsram
53,77 kr
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Twin Tube 11 W G23 237 mm 2700K 60W Extra Warm White 80 827 27mm 1 900 lm 5000h A
RS-artikelnummer 792-6814
Tillv. art.nr4050300025742
VarumärkeOsram
42,34 kr
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Quad Tube 9 W G23 167 mm 3000K - Warm White 89 830 27mm 2 600 lm 10000h A
RS-artikelnummer 669-2933
Tillv. art.nr4050300010618
VarumärkeOsram
53,77 kr
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Twin Tube 11 W G23 237 mm 4000K 60W Cool White 80 840 27mm 1 900 lm 10000h A
RS-artikelnummer 463-5868
Tillv. art.nrDDE132
VarumärkeOsram
44,103 kr
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Quad Tube 13 W G24q-1 131 mm 2700K 75W Extra Warm White 80 827 27mm 2 900 lm 10000h A
RS-artikelnummer 792-6798
Tillv. art.nr4050300025711
VarumärkeOsram
36,86 kr
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Quad Tube 26 W G24d-3 172 mm 3000K - Warm White 89 830 27mm 2 1800 lm 10000h A
RS-artikelnummer 472-7973
Tillv. art.nr010625
VarumärkeOsram
44,99 kr
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Quad Tube 13 W G24d-1 138 mm 4000K 75W Cool White 80 840 27mm 2 900 lm 10000h A
RS-artikelnummer 702-5337
Tillv. art.nr18PLC8304PIN
VarumärkePhilips Lighting
43,35 kr
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2D 18 W G24q-2 143 mm 3000K 100W Warm White 82 830 27mm 2 1200 lm 13000h B
RS-artikelnummer 463-5880
Tillv. art.nrDDE262
VarumärkeOsram
51,434 kr
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Quad Tube 26 W G24q-3 165 mm 2700K 150W Extra Warm White 80 827 27mm 2 1800 lm 20000h A
RS-artikelnummer 407-5604
Tillv. art.nr11PLS8402PINB
VarumärkePhilips Lighting
53,23 kr
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Twin Tube 11 W G23 236 mm 4000K 75W Cool White 82 840 28mm 1 900 lm 10000h A
RS-artikelnummer 711-7196
Tillv. art.nr25000
VarumärkeSylvania
108,896 kr
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2D 28 W GR10q 207 mm 4000K - Cool White 82 840 205mm 1 2050 lm 10000h A
RS-artikelnummer 792-6808
Tillv. art.nr4050300389059
VarumärkeOsram
46,71 kr
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Quad Tube 13 W G24q-1 131 mm 3000K - Warm White 89 830 27mm 2 900 lm 20000h A
RS-artikelnummer 407-5698
Tillv. art.nr26PLC8404PIN
VarumärkePhilips Lighting
61,83 kr
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Quad Tube 26 W G24q-3 164 mm 4000K 150W Cool White 82 840 27mm 2 1800 lm 13000h A
RS-artikelnummer 792-6811
Tillv. art.nr4050300010731
VarumärkeOsram
74,97 kr
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Quad Tube 18 W 2G11 217 mm 3000K - Warm White 89 830 18mm 2 1200 lm 20000h A
RS-artikelnummer 407-5626
Tillv. art.nr13PLC8402PIN
VarumärkePhilips Lighting
43,96 kr
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Quad Tube 13 W G24d-1 138 mm 4000K 75W Cool White 82 840 27mm 2 900 lm 10000h A
RS-artikelnummer 669-2958
Tillv. art.nr4050300020181
VarumärkeOsram
52,96 kr
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Twin Tube 11 W 2G7 214 mm 4000K 75W Cool White 80 840 27mm 1 900 lm 20000h A
RS-artikelnummer 472-7721
Tillv. art.nrDDE264
VarumärkeOsram
45,031 kr
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Quad Tube 26 W G24q-3 165 mm 4000K 150W Cool White 80 840 27mm 2 1800 lm 20000h A
RS-artikelnummer 407-5597
Tillv. art.nr9PLS8402PINB
VarumärkePhilips Lighting
52,69 kr
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Twin Tube 9 W G23 167 mm 4000K 60W Cool White 82 840 28mm 1 600 lm 10000h A
RS-artikelnummer 792-6791
Tillv. art.nr4050300025698
VarumärkeOsram
44,49 kr
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Quad Tube 13 W G24d-1 138 mm 3000K - Warm White 89 830 27mm 2 900 lm 10000h A