CYA Testing

[chem geek]

For what it's worth, this link at the Taylor website has pictures of the CYA test (scroll down) that give an idea of how the black dot disappears.

[giroup01]

Or [DEAD="http://cjoint.com/data/ivbMMzZhAC.htm"]this[/DEAD] blast from the past!

[Sumo1]

Thank you for your responses!
Hal