Ranex white residue

How do you remove ranex or phosphoric white residue? I applied it on aluminium as it had surface rust stains which the ranex removed but left a white residue. Like to remove this before re polishing

29160cookie-checkRanex white residue

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Dr Chemical

Try Brasso. That should shift it. If it doersn’t, dilute hydrochloric acid – 1 part in 5 in a garden sprayer