What is the shelf life of my comparator colour standard discs?

The discs used in our Contour Comparator kits are produced from fade-free acetate and inks.  The colour acetate petal discs are designed to be accurate for 10 years, providing they are stored in a cool, dark place.  Continuous exposure to intense UV light sources (such as daylight) may cause premature colour fading.  The outer clear plastic casing can become blemished or stained if exposed to solvents, chemical reagents or abrasive surfaces and affect the result.

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