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Analyzing for Fluoboric Acid in Tin Plating Solution

I am attempting to set up a tin plating process and need a procedure for determining the concentration of fluoroboric acid in the plating solution. If you know of any such procedures, please let me know.

Allen Bosley
- Beltsville, Maryland
1999

Check out page 552 of the 98 Metal Finishing Guidebook. They have the test methods listed for all the acids there.

K. Ferraz
- Austin, Texas
1999

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You can either check with your Fluoborate vendor/manufacturer or in the Metal Finishing Guidebook.

This analysis will give you an Empirical (EMP) reading, and usually is only a titration with a Standard Solution of Sodium Hydroxide to a turbid endpoint. Multiply by an appropriate factor and you have the concentration.

Ed Budman [dec]
- Pennsylvania
With deep sadness we advise that our good friend Ed passed away Nov. 24, 2018
2000