At 18:43 14/02/98 +0800, you wrote:
>Dear Taegon Lee ,
>
>
>     It is actually quite simple . Dissolve the organic coating in alcohol ,
>     ethanol and measure the coating thickness with spectrophotometer at a
>     particular wavelength recommended by the chemical supplier . Correlate
>     the reading with the mathematical calculation which I believe the supplier
>     would have .
>
>     Thanks .
>
Just short comment :
For such method You have to know the exact area covered by OSP . Beside of
it , the result will be average , without differentiation between surface
and PTH .
We are using SERA equipment , but : the measurement is time consuming and we
are not sure about corelation between this method and spectrophotometric
method .
Regards .
Edward Szpruch
Eltek Ltd - Israel
Tel  972 3 9395050
Fax 972 3 9309581
E-mail :  [log in to unmask]

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