You don’t need a pH meter. Just read the bottle. Look for words like "ammonia-free" or "gentle on tints" if you have special glass. If you’re DIY-ing with a homemade mix, stick to a few drops of dish soap (which is neutral to slightly alkaline) in water, plus a splash of isopropyl alcohol to help it dry fast. Skip the vinegar for daily use.
And here’s a fun test: if your cleaner makes your fingers feel a little slippery (like soap does), it’s likely alkaline. If it feels like water with nothing, it might be neutral. If it feels stingy or smells like a salad, it’s probably acidic. Your skin knows!
