| 摘要 |
PROBLEM TO BE SOLVED: To solve the problem that an ultraviolet dosimeter is expensive and cannot be used in bad weather such as rain, which is used for a method for acquiring the intensity of light such as an ultraviolet ray by reading the numerical value displayed thereon and by judging the result. SOLUTION: This pigment decomposition test sheet characterized by forming a titanium oxide film 1-3 and a pigment 1-4 on a substrate 1-1 through a protective bonding layer 1-2, which is used in a method for acquiring the intensity of light such as an ultraviolet ray or the like by watching the progression state of pigment decomposition, is inexpensive, and can be used easily anywhere without being influenced by the weather.
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