Some of you may be aware that a couple of years ago, I documented the fact that Boroscopes (as manufactured and sold by Phillips and various distributors) did not provide the safety to the glassworker that the manufacturer claimed it did.
http://www.auralens.net/e_phillips3.cfm
Last week, a totally independant test was done by a fellow glassworker who also works at an optical testing facility. This test proved that the information I provided several years ago is in fact true.
As a result, Generations Glass has discontinued selling the product and is recommending that anyone who is wearing Boroscopes add additional filtration in the form of welders clip on's.
You can read the whole thread on
www.thegldg.com here:
http://www.thegldg.com/forum/showthread.php?t=206
If you are wearing Boroscopes of any kind, I strongly recommend that you read the thread at TheGLDG, and take the steps recommended by Kristian Turley.
This product, in my opinion, is unsafe for borosilicate workers.