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topic 3874

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


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


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
eb sig
Ed Budman
- Pennsylvania

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