Dear Mônica Bossardi Coelho what exactly are you looking for? If you don't want to use HCl, you have two alternatives: use other chemical than HCL, or don't adjust th pH of culture media. In both case, it'll be consequences. Thus, you must to assess (assume) your risks under your conditions
Dear Ricardo Julian Licea-Moreno thanks for your contribution, I wonder what could be used assuming situations where you do not have HCL avaiable at your laboratory.