I advise you to buy
 

Accidentally saw one dealer in Germany, a device that fits in your pocket and do not substitute for the consideration of painting, for example in the pre-auction viewing. You can watch the painting in the Ultraviolet almost in daylight.
Page, where you can buy in Germany
http://www.reskolux.de/index.html
I had never seen anything like it. Works on batteries. I'm not too lazy to drive there by car. Lost a day, but was very pleased with the acquisition. It turns out the owner of the store for restavrotorov painting CAM invented this device and its Patented, as I was told!
Good luck

thing can be good, but 600 euros, in my opinion, very exaggerated.

It is without value added tax!

But, believe me, the thing standing.

Role /opportunity to ultraviolet light in an amateur diagnosis of painting, is greatly exaggerated, especially for beginners.
Tell me what you can /want to see in ultraviolet light?

as for me because apart from the following restoration and preliminary determination of white (it is necessary to know their glow), so more features ultrfioleta and can not remember ... maybe erased the signature, but this is more to the IR.

Places records and later svezhih.Na auctions exhibited thousands of paintings.
Need to quickly from view.
The big difference is written.
Person or the sky.
Yes, and the signature must see.

vyadem, in addition to the existence of anti-UV tools, common cleaning, followed by conservation hides everything.

Not all of the cleaned

precisely the work that must be ...
guaranteed to be "cleaned" :D

Probably a lot of anti-UV tools. But that light green color in the UV, and this often occurs is determined.

I have no doubt that there are fakes of the highest class. They are not talking.
This is another story.
The device is very useful in the primary viewing