Cleaning of turret

Dear sir,
During L.C i found turret in rusted condition after conversation with technician he tell me that we used 70% IPA for cleaning but still the rust is not going on
My question is can we use 100% IPA for this is this helpful for removing the rust or not

Currently in our production facility we use only absolute IPA for cleaning turret , punches and dies so that they do not rust in the future

96% or 98% can be used.
Thanks

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