Guide to the table
Our test was carried out in an independent laboratory in New Zealand. Models were “warm white” 18-20Watt CFLs.
- Light output (40 percent)
- Switching life (30 percent)
- Warm-up time (30 percent)
Light output: Based on relative light output percentages.
Switching life: Calculated on the number of on/off cycles (up to a maximum of 6000) the bulb could withstand before it failed. A score of 10 = no failures.
Warm-up time: Based on how long it took for the bulbs to reach 90 percent of their maximum brightness.
Price is what we paid in January 2013. Prices are per bulb.