
Math equation for pH adjusting?
Would someone be able to help me out with a math formulating question?
With formulas that we adjust the pH in, is there a specific equation we can use in order to figure out how much pH adjuster to put in with the entire formula? Rather than adjusting the pH at the end of formulation and diluting the active ingredients. Making the pH adjuster included to the totals (100%) of the formula.
For a more detailed example, say I have 2% of an active ingredient in a formula. At the end I use ‘x’ grams adjuster (50/50 CA or TEA for example; anything), which ends up being 0.4% of the total formula to get the desired pH.
But now my active ingredient is diluted and can no longer be said it is at 2%. What equation can I use in the future so I know how much pH adjuster to use from the very start?