UV tester card for UV ray intensity detector

UV tester card for UV ray intensity detector 

The UV Tester Card can change colors according to Solar UV radiation, higher the Solar UV radiation, deeper the color change, compare the color change to the 3 standard color smiles(low, moderate, high) around and you can see low, moderate, high level of Solar UV radiation.
Tell you when is the best time to use solar charger or similar solar equipment effeciently:
Low: Solar energy equipment can not be used;
Moderate: Solar energy equipment can be used but the efficiency is low;
High: Solar energy equipment can be used but the efficiency is MID.
Tell you UV Index and SPF of sunscreen you should apply:
Low: Apply the sunscreen with SPFModerate: Apply the sunscreen with the SPF between 20 and 30.
High: Apply the sunscreen with SPF>30.
Tell you when to reapply sunscreen:
When you apply sunscreen to your skin, also apply sunscreen on the transparent plastic film covering the UV Tester Card, when the UV Tester Card changes color, it's the time for you to reapply sunscreen 

2-15 days deponds on order quantity and production requirement

2-5 days is also possible to finish your order

1. if amount more than US$500.00, payment terms is T/T, L/C at sight

2. if less than USD$500.00/order, paypal, western union, moneygram also acceptable

3. please note that the above terms are not a 100% fixed standard, it could be negiated again

**** Other Related UV tester card for UV ray intensity detector Picture