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Our test was carried out in an independent laboratory in New Zealand. Models were “warm white” 18-20Watt CFLs.
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.
This information is available to Consumer members only.