Now a convenient fluorescent compact bulb that provides 96 CRI rating with 5000 Kelvin.  This is the most effective compact fluorescent bulb currently on the market today.  Where space and functionality are factors limiting the use of full fluorescent tubes, or a floor lamp.  They are rated to last 10,000 hours maintaining 80% of the lumens after 4,000 hours.  We recommend replacing them for use as a full spectrum light every year or 4000 hour but they can still be used in any regular light fixture as a normal light source for an additional 2 years or more.  Warning: only use for 2 hour maximum daily.