You can also get inhibitors put into the phosphoric acid, so that it only works on the rust. Phosphoric acid in low doses is present in some of the food you eat.
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Bluebell
Carrier Armoured O.P. No1 Mk3 W. T84991
Carrier Bren No2.Mk.I. NewZealand Railways. NZR.6.
Dodge WC55. 37mm Gun Motor Carriage M6
Jeep Mb #135668
So many questions....
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