In a message dated 05/08/2000 10:46:59 PM US Eastern Standard Time,
[log in to unmask] writes:

>  Can someone tell me what CTI(notCTE) stands for and how to measure. I
> believe but I am not 100% that CTI might stand for Comparative Tracking
Index.
>  But still do not understand what the term means.

This is correct.  CTI is Comparative Tracking Index.  There is an ASTM method
for this although I would have to dig to find it.  You might find it at
www.astm.org.  It is essentially a water drop test.  Place a water drop
between two electrodes on a laminate surface and electrify it.  See how long
it takes to go to failure (a short).  A cleaner laminate will have a longer
time to failure.

Doug Pauls
CSL

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