How to Test Ph Levelのやり方について詳しく紹介します。初心者でも安心のガイドをご覧ください。

Did you know that your stomach acid has a pH around 1.5 to 3.5? That’s strong enough to dissolve a razor blade (yes, really—don’t test that). But here’s the kicker: pure water has a pH of 7, but rainwater is slightly acidic at 5.6 because it picks up carbon dioxide from the air. So the sky is literally peeing diluted soda water on your head. You’re welcome for that image.