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Colour measuring equipment

    
4. Tungsten filament - as used in conventional light bulbs.
image: Verivide light F
    
3. CWF Cool White - this is another fluorescent source widely used in stores in the USA.
            
 
image: Verivide CWF
            
 
5. Ultra violet - a backlight used to reveal the presence of fluorescent dyes and brighteners.
image: Verivide uv

Also See:

Dyers' notebooks
Fastness tests
Investigating colour vision