Before the aluminum anodizing, aluminum surfaces are cleaned in etching baths. To maintain surface properties, online monitoring of bases (NaOH, etc.), acids (H₂SO₄, HNO₃, HF, H₃PO₄, etc.) and aluminum is required. This is best achieved by titration with Process Analyzers ADI 2045TI and ADI 2016, depending on single- or multiparameter needs..

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