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Bio 3 Mex is an oil and grease cleaner that is acidic in nature (3.0 to 4.0 pH), where Bio 3 Mex RP1 is alkaline in nature (10.0 to 11.0 pH). While they both serve similar applications, the use of Bio 3 Mex is not recommended on metals that contain iron due to its potential corrosiveness to such metals.
