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Ecozone Biobulb, Energy-Saving Daylight Bulb, Screw Cap E27, 25W Equivalent to 100w, 1750 Lumens, Full Spectrum, Daylight White 6500k, Uses 75% Less Energy. Ideal for suffers of S.A.D [Energy Class A]
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- Ecozone Daylight Biobulb 100W Screw Cap
- By using 75% less energy than a conventional bulb, you'll be saving electricity and money, not to mention improving your carbon footprint.
- Not only does the Biobulb produce light of exceptional clarity, it is also a Compact Fluorescent Energy Saving bulb.
- The Biobulb has been tested to produce around 6400K, more than twice the average output of standard Energy Saving Bulbs.
- Using only 25W of electricity, the Biobulb produces a bright light equivalent to that of a 100W incandescent bulb.
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Lamp efficiency is rated on a scale of A to G
Lamp efficiency is rated on a scale of A to G A
Daylight is an important part of a healthy lifestyle, improving mood, night time sleep and energy levels. Daylight helps restore the body's natural rhythms and brings nourishment to the body, mind and soul. In a market dominated by yellow bulbs, the Biobulb brings back daylight into the home, producing light of exceptional clarity.
The Biobulb 25W Screw cap (E27) produces consistent, flicker-free light, and has been tested to last for up to 10,000 hours.
Daylight and Colour Temperature
Degrees Kelvin is the measure of colour temperature. The natural colour temperature of daylight is around 6500K. As a comparison, conventional energy saving bulbs emit light at around 2500-3000K. This yellow light can distort colours and can cause tired eyes and eye strain.
The Biobulb has been tested to produce around 6400K, more than twice the average output of standard Energy Saving Bulbs. This is a clear white light which, like daylight, is easy on the eyes and prevents unnecessary eye strain, improving visibility and reading comfort.
The excellent colour matching of the Biobulb make it ideal for use for designing, craft work, sewing or any other activity requiring good quality light.
Not only does the Biobulb produce light of exceptional clarity, it is also a Compact Fluorescent Energy Saving bulb. Using only 25W of electricity, the Biobulb produces a bright light equivalent to that of a 100W incandescent bulb.
By using 75% less energy than a conventional bulb, you’ll be saving electricity and money, not to mention improving your carbon footprint. An ‘A’ rated energy efficient product, the Biobulb has been tested to last up to 10,000 hours.
Ecozone Biobulbs are not suitable for use in dimmer circuits
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I last bought one of these in August 2011, and it died last week, which makes the 10, 000 hour lifetime appear accurate (10, 000 hours = 416 days, which is about 25% of 5 years, so for it to last 10, 000 hours over that 5 years, it would have had to be on 1/4 of every day, which is very reasonable assumption given that the bulb was in my home office and I practically live in it!).
Brightness and colour
Yes, this does look like sunlight, and yes, it does look a lot more blue than other lights. The light makes reading (and looking at a computer screen) easier on the eye.
The reason I bought this bulb, and the reason I will continue to buy them is their colour temperature and accuracy. The light colour is 6500k at CRI85. In plain English this means ‘the light is 15% short of being identical in colour to the sun on an overcast day, which is the colour of natural light we find comfortable, and which causes us least eyestrain’.
In particular, viewing a properly calibrated monitor (for both colour and brightness) at 6500k often looks too blue under normal consumer lighting, and is also often too bright, causing eyestrain. Under this light though, it looks spot on with no glare. Perfect conditions for the photo editor, or for that matter, anyone who has to stare at a computer screen for hours.
In fact, when my last biobulb went, I just could not bring myself to do any photo editing, as the room just made the monitor colour look way out, and the brightness hurt my eyes after a couple of hours… so delivery of new biobulbs has been one of the most anticipated deliveries from Amazon in a while!
Note: yes I know CRI85 is not that accurate for photography (most photographic lighting is CRI95 or better). This is not for taking photos though; it is for a decent ambient lighting that doesn’t make a properly calibrated screen look odd because the background lighting is too yellow. A 25W or 30W 6500k biobulb solves this issue perfectly.
Having just put these in I have to agree with the other reviewers - these appear very very bright in comparison even to a "150w equivalent" energy saver that I use for an outside light. They also get up to full brightness very quickly. However I'm not convinced that this is truly daylight replicating colour temperature - I have a phillips light up alarm clock and the light that comes off that is far more natural and pleasant - these are very stark and do wash the colour out of everything - I have a very red sofa and it looks almost grey! From outside through the curtains it looks like the room is lit up by a giant TV or other artificial source... wouldn't be out of place in a science lab!
They are very easy to read under and I might well swap them into my study, otherwise might just return them as I don't think I can live with them.
Amazon has clearly listened to the packaging feedback, mine were in their boxes, surrounded by bubble wrap, in a box, which itself was in another comically big box, so no worries there.
I find it easy to get colours right when dressing under this light, and reading is so much easier.
This is finally the low energy bulb to buy! I now have four running in the house and have just ordered another four.
A truly great light!
The new bulb is scarily bright and by pointing my desk-lamp up to the ceiling it lights up the whole room and half the next one. Beware, buy one of these and you'll never be satisfied with those old slow-starting yellow/orange-light giving bulbs again. I just hope it lasts longer than the previous one, though I did buy two, just in case.
Most recent customer reviews
The whiter colour isn't for everyone.