CRI (color rendering index) is a measure of how accurately a light source illuminates objects' true colors. This LED strips have compared to normal LED strips a very high color accuracy, which makes them ideal for photography.
Check out the results:
http://www.pi3dscan.com/index.php/instructions/item/led-lighting-cri-value
Roll of 4 meters! So good for 2x 2 meters strips for in your scanner.
Highly recommended to use with powersupply meanwell LPF-40D-24
CRI Value: Above 95 up to 97
Voltage: 24V
Wattage: 18W per meter
Color Temperature: 5600K
10 mm width flexible PCB with adhesive backing
50K hour lifetime
Cuttable every 6 LEDs (50 mm)