Re: i bought the lactic acid…
You’re making this more complicated than it is nadz. The example I gave in the previous post compared 2 different types of acid.
As for what you have…it just means that that the 50% lactic is stronger than the 30% lactic.
And why even look for a pH of 1.0 in lactic acid? If you want something stronger than the 50% you have…just move onto using 40% or 50% glycolic.