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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Description Price Shape Wattage Lamp Base Length Colour Temperature Incandescent Equivalent Wattage Colour Tone Colour Rendering Colour Reference Diameter Number of loops Luminosity Life Hours EU Energy Efficiency Rating
RS Stock No. 499-223
Mfr. Part No.008840
BrandOrbitec
kr 79,63
Each
Units
Candle 11 W E14 138 mm 2700K 60W - - - 42mm - 385 lm 6000h A
RS Stock No. 792-6849
Mfr. Part No.4050300816838
BrandOsram
kr 83,07
Each
Units
Twin Tube 16 W GR8 141 mm 3500K - Warm White 89 835 138mm 4 1050 lm 10000h B
RS Stock No. 711-7287
Mfr. Part No.25925
BrandSylvania
kr 38,481
Each (In a Pack of 10)
Units
Stick 13 W G24q-1 118 mm 4000K - Cool White 82 840 28mm 1 900 lm 10000h A
RS Stock No. 711-7209
Mfr. Part No.25004
BrandSylvania
kr 75,112
Each (In a Pack of 10)
Units
2D 38 W GR10q 207 mm 4000K - Cool White 82 840 205mm 1 2850 lm 10000h A
RS Stock No. 570-694
Mfr. Part No.11PLS8274PINB
kr 49,51
Each
Units
Twin Tube 11 W 2G7 220 mm 2700K 75W Warm White 82 827 28mm 1 900 lm 13000h A
RS Stock No. 472-7973
Mfr. Part No.010625
BrandOsram
kr 43,377
Each (In a Pack of 10)
Units
Quad Tube 13 W G24d-1 138 mm 4000K 75W Cool White 80 840 27mm 2 900 lm 10000h A
RS Stock No. 407-5581
Mfr. Part No.7PLS8402PINB
kr 51,32
Each
Units
Twin Tube 7 W G23 135 mm 4000K 40W Cool White 82 840 28mm 1 400 lm 10000h B
RS Stock No. 791-8337
Mfr. Part No.0035006
BrandSylvania
kr 42,51
Each
Units
Stick 20 W E27 132.5 mm 2700K 85W - 80 827 48mm - 1160 lm 8000h A
RS Stock No. 711-7290
Mfr. Part No.25927
BrandSylvania
kr 38,864
Each (In a Pack of 10)
Units
Stick 26 W G24q-3 148 mm 4000K - Cool White 82 840 28mm 1 1800 lm 12000h A
RS Stock No. 702-5384
Mfr. Part No.42PLT8304PINCS
kr 68,62
Each
Units
Six Tube 42 W GX24q-4 161 mm 3000K - Warm White 82 830 41mm 3 3200 lm 13000h B
RS Stock No. 789-9790
Mfr. Part No.0025882
BrandSylvania
kr 34,90
Each
Units
Stick 9 W G23 168 mm 2700K - Extra Warm White 80 827 33mm - 600 lm 10000h A
RS Stock No. 472-7721
Mfr. Part No.DDE264
BrandOsram
kr 43,416
Each (In a Pack of 10)
Units
Quad Tube 26 W G24q-3 165 mm 4000K 150W Cool White 80 840 27mm 2 1800 lm 20000h A
RS Stock No. 792-6782
Mfr. Part No.4050300425627
BrandOsram
kr 91,37
Each
Units
Triple Tube 42 W GX24q 169 mm 4000K - Cool White 89 840 49mm 2 3200 lm 20000h A
RS Stock No. 820-8808
Mfr. Part No.009314
BrandOrbitec
kr 84,37
Each
Units
Oval 9 W B22d 100 mm 2700K 40W - - - 50mm - - - A
RS Stock No. 570-701
Mfr. Part No.10PLC8272PIN
kr 42,38
Each
Units
2D 10 W G24d-1 116 mm 2700K 60W Warm White 82 827 27mm 2 600 lm 10000h B
RS Stock No. 499-201
Mfr. Part No.009091
BrandOrbitec
kr 106,78
Each
Units
Candle 9 W E14 135 mm 4000K 40W - - - 39mm - - 6000h A
RS Stock No. 702-5359
Mfr. Part No.18PLT8402PINCS
kr 56,76
Each
Units
Six Tube 18 W GX24d-2 119 mm 4000K 100W Cool White 82 840 41mm 3 1200 lm 10000h B
RS Stock No. 407-5597
Mfr. Part No.9PLS8402PINB
kr 50,80
Each
Units
Twin Tube 9 W G23 167 mm 4000K 60W Cool White 82 840 28mm 1 600 lm 10000h A
RS Stock No. 702-5371
Mfr. Part No.18PLT8404PINCS
kr 63,50
Each
Units
Six Tube 18 W GX24q-2 112 mm 4000K 100W Cool White 82 840 41mm 3 1200 lm 13000h B
RS Stock No. 792-6785
Mfr. Part No.4050300348568
BrandOsram
kr 91,37
Each
Units
Triple Tube 32 W GX24q 148 mm 4000K - Cool White 89 840 49mm 2 2400 lm 20000h A