Hi Emily,

The other method for electrographic  porosity testing of Au over Ni is
nioxime test papers developed in ammonia.Pores ie presence of Ni ions are
indicated by purple spots.
These were availiable from Fischer Instrumentation....I don't know if they
still are!
This complied to BS 9761

Slan,

Ken McGowan
----- Original Message -----
From: "Emily Tse" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Thursday, March 22, 2001 5:25 AM
Subject: [TN] Photographic Paper


> Dear TNers,
>
> My team is trying to carry out an experiment under IPC-TM-650-Test Methods
> Manual (number 2.3.24.1) -  a Porosity Testing of Gold Electrodeposited on
a
> Nickel Plated Copper Substrate Electrograhpic Method.  The test is a bit
> outdated but it seems to fit the best in our evaluation at this stage.
>
> However, one of the materials required for the test is no longer available
> in the market (Kodabromide, glossy finish, single wt. photographic paper,
> fixed before use).  From the Kodak webpage, they have suggested another
> replacement of Kodabrome II RC Paper.  Yet the paper base has been changed
> from Fiber to RC.  Will that change the result of the test?
>
> We would also like to know if there is any amendment on the test (if I
have
> missed!) as well as other possible replacement for this particular
> photographic paper.
>
> Looking forward for your kind suggestions!
>
> Best Regards,
>
> Emily Tse
> Process Development Engineering
> ASAT Ltd.
>
>
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