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February 1998

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Subject:
From:
H H TONG <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Sat, 14 Feb 1998 18:43:10 +0800
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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 .








>Hello technetters.
>
>Can anyone inform me of the method to measure thickness
>of pre-flux(somebody calls this Entek).
>Our factory is using Tamura chemical.
>It is preferable if the method is nondestructive.
>
>Thanks.
>
>Taegon Lee ([log in to unmask])
>SEMCO
>
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