Is there a spectacles lens that can read invisible utraviolet ink?

Subject: Is there a spectacles lens that can read invisible utraviolet ink?

Date: Mon Feb 21 11:38:37 2000
Posted by Steven H. C. Law
Grade level: nonaligned School: No school entered.
City: Miri State/Province: Sarawak Country: Malaysia
Area of science: Chemistry
ID: 951154717.Ch

Message:


I wish to mark my products with batches numbers, date casted, percentage 
of mix etc. and protect it from imitation but I do not want to spoil the 
beauty of the products. If there is where can I obtain the ink and lens?

Re: Is there a spectacles lens that can read invisible utraviolet ink?

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