How to find out if BlueRay media is LTH or HTL product?

[pstein]

As you know there are two manufacturing styles of BlueRay media:

 

HTL (more expensive but more robust and presumably longer life)

and

LTH (cheaper, more sensitive to temperature changes and sun light)

 

How can I find out if a given BlueRay disc manufactured in LTH or HTL style?

Of cause the original product packaging, invoice and seller contact address is not available any more.

 

I could imagine that the serial number burned on the disc give this information.

 

Is this true?

 

How can I track down this information?

 

Peter

[LIGHTNING UK!]

Look in the disc info box on the right when in one of the modes, it'll tell you which one of the two the disc is.