A set of four rows of colors for the testing kits used for testing quality assurance employees' color vision. Case and scoring software not included. The color fields on the caps consist of lacquer-coated paper and hence are susceptible to wear and should be replaced every two years according to the manufacturer.
One kit as follows:
We recommend to replace color caps regardless of application after no more than 200 tests (equivalent of approx. 100 hours' exposure), after five years or in the event that individual caps are damaged or contaminated. According to the manufacturer, the color stability stability for the Munsell color samples is valid for five years, provided they are stored properly in a dark place.