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. 792-6772
Mfr. Part No.4050300342283
BrandOsram
kr 91,37
Each
Units
Triple Tube 26 W GX24q 132 mm 4000K - Cool White 89 840 49mm 2 1800 lm 20000h A
RS Stock No. 407-5648
Mfr. Part No.26PLC8402PIN
kr 43,16
Each
Units
Quad Tube 26 W G24d-3 171 mm 4000K 150W Cool White 82 840 27mm 2 1800 lm 10000h B
RS Stock No. 570-638
Mfr. Part No.7PLS8272PINB
kr 48,60
Each
Units
Twin Tube 7 W G23 135 mm 2700K 40W Warm White 82 827 28mm 1 400 lm 10000h B
RS Stock No. 407-5660
Mfr. Part No.13PLC8404PIN
kr 58,58
Each
Units
Quad Tube 13 W G24q-1 131 mm 4000K 75W Cool White 82 840 27mm 2 900 lm 13000h A
RS Stock No. 702-5374
Mfr. Part No.26PLT8304PINCS
kr 75,52
Each
Units
Six Tube 26 W GX24q-3 127 mm 3000K 150W Warm White 82 830 41mm 3 1800 lm 13000h B
RS Stock No. 570-739
Mfr. Part No.26PLC8272PIN
kr 46,79
Each
Units
2D 26 W G24d-3 171 mm 2700K 150W Warm White 82 827 27mm 2 1800 lm 10000h B
RS Stock No. 570-773
Mfr. Part No.26PLC8274PIN
kr 57,41
Each
Units
2D 26 W G24q-3 164 mm 2700K 150W Warm White 82 827 27mm 2 1800 lm 13000h A
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
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. 711-7180
Mfr. Part No.24991
BrandSylvania
kr 38,983
Each (In a Pack of 10)
Units
2D 16 W GR10q 141 mm 3500K - Warm White 82 835 138mm 1 1050 lm 10000h A
RS Stock No. 792-6763
Mfr. Part No.4050300342047
BrandOsram
kr 89,55
Each
Units
Triple Tube 26 W GX24d 139 mm 4000K - Cool White 89 840 49mm 2 1800 lm 10000h A
RS Stock No. 702-5321
Mfr. Part No.26PLC8302PIN
kr 40,34
Each
Units
2D 26 W G24d-3 171 mm 3000K 150W Warm White 82 830 27mm 2 1800 lm 10000h B
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. 669-2939
Mfr. Part No.4050300006017
BrandOsram
kr 44,38
Each
Units
Twin Tube 11 W G23 237 mm 2700K 60W Extra Warm White 80 827 27mm 1 900 lm 5000h A
RS Stock No. 711-7253
Mfr. Part No.25910
BrandSylvania
kr 30,788
Each (In a Pack of 10)
Units
Stick 18 W G24d-2 90 mm 3000K - Warm White 82 830 28mm 1 1200 lm 10000h A
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. 662-1436
Mfr. Part No.927939383540
kr 80,90
Each (In a Pack of 10)
Units
2D 28 W GR10q 207 mm 3500K 28W Warm White 82 835 205mm 1 2050 lm 12000h A
RS Stock No. 702-5312
Mfr. Part No.18PLC8302PIN
kr 42,38
Each
Units
2D 18 W G24d-2 150 mm 3000K 100W Warm White 82 830 27mm 2 1200 lm 10000h B
RS Stock No. 204-4269
Mfr. Part No.927914984071
kr 136,34
Each
Units
Six Tube 57 W GX24Q-5 197.7 mm 4000K - Cool White 82 840 - - 4200 lm 13000h -
RS Stock No. 499-148
Mfr. Part No.008849
BrandOrbitec
kr 69,39
Each
Units
Candle 9 W E14 113 mm 2700K 40W - - - 42mm - 315 lm 6000h A