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Nickel Titration

I work for a company manufacturing piezoelectric ceramics. For the past year, I have been working on developing an electroless nickel/immersion gold plating line.
I have had success in a beaker scale operation, in which the solution is discarded after every two or three runs. We are currently in the process of scaling up to 1 gallon tanks.
To avoid generating massive amounts of waste, I have been attempting to use nickel titration and making necessary adjustments to the solution. The company who provides us with chemicals has given inconsistent procedures for the titration.

Is there a standard procedure for nickel phosphorus titration?
I would appreciate anyone who can provide some support for what has worked for them.

Mandy Sergent
- State College, Pennsylvania, USA
2003

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Try this: pipette [pipettes on eBay or Amazon [affil links] 10 ml bath into an erlenmeyer flask, add 100 ml DI water, 10 ml .88 M NH4OH, and .1 g murexide [affil links] indicator. Titrate with 0.1M EDTA to a violet blue endpoint. Mls .1 M EDTA x .587 = g/l Ni

James Totter, CEF
- Tallahassee, Florida
2003

Mr.James Totter! I think...... 1 M EDTA(ml) * 5.87 = g/l(NI)

SE DO JANG
- Korea
2003

We are currently nickel plating copper. I am very interested in the violet blue end result, could I get more information?

John Sutherland
- Jacksonville, Florida
December 9, 2009