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AN-T-034

Hydrofluoric and nitric acid in etching baths


Resumo

Determination of hydrofluoric and nitric acid in etching baths by potentiometric titration.

a) Determination of the total acid content using the combined Sb electrode and NaOH as titrant.

b) Determination of hydrofluoric acid using the F-ISE and the titrant La(NO3)3.

The concentration of nitric acid is then determined by calculation.

Contato

Metrohm Portugal

R. Frei Luis de Granada 14G
1500-680 Lisboa

Contato