No-one likes general adverts, and ours hadn't been updated for ages, so we're having a clear-out and a change round to make the new ones useful to you. These new adverts bring in a small amount to help pay for the board and keep it free for you to use, so please do use them whenever you can, Let our links help you find great books on glass or a new piece for your collection. Thank you for supporting the Board.

Author Topic: Vasart / Strathearn transition UV  (Read 596 times)

0 Members and 1 Guest are viewing this topic.

Offline Frank

  • Author
  • Members
  • ***
  • Posts: 9419
  • Gender: Male
    • Glass history
    • Europe
    • Gateway
Vasart / Strathearn transition UV
« on: December 03, 2007, 09:09:12 PM »
UV fluorescence is an extremely complicated subject...  ...but can also be affected by the annealing process, and the furnace gases

With a distinct change from one week to the next, from town to propane gas and I assume they got a new annealing oven too - there is thus a slight possibility for further thoughts on this.  ;)

Support the Glass Message Board by finding a book via

Offline KevinH

  • Global Moderator
  • Members
  • *
  • Posts: 6078
    • England
Re: Vasart / Strathearn transition UV
« Reply #1 on: December 04, 2007, 02:19:43 PM »
The main characterstic of UV fluoresence for Scottish weights is whether it shows as blue or not. If it does, then it is very likely that the batch contained sufficient lead to give that UV reaction.

I doubt whether change of gas type or the annealing process would have a marked affect on the UV colour reaction beyond chaning the intensity or clarity of the basic colour. But if somebody could come up with some definitive comments, with photos, that show what sort of change can occur with differing gas types or annealing controls, I'd be very interested.

Support the Glass Message Board by finding glass through


SMF spam blocked by CleanTalk
Look for glass on
Visit the Glass Encyclopedia
link to glass encyclopedia
Look for glass on (us)
Visit the Online Glass Museum
link to glass museum

This website is provided by Angela Bowey, PO Box 113, Paihia 0247, New Zealand