When im making apvp i have to hit level 5 of ph but it's very hard to be precise on the 5 if im almost at 5 and poured very tiny bit too much it always jumps to 4 or lower, my question is, is there a digital ph meter with a rod tthat can resist acid who can tell me precisely what level ph im on, this would make it much easier for me. Can some chemists recommend me good ones please??
