If you want to feel a little more scientist-like, liquid drop kits are your jam. You fill a small vial with water, add a few drops of a special indicator liquid, and watch the water change color. It’s like making a potion, but for real.
These kits are super popular for aquariums because they’re more precise than strips. You shake the vial, hold it against a white card, and compare shades. The cool part? You get to see the color shift from yellow to pink or blue right before your eyes. It’s oddly satisfying, like watching a sunset in a test tube.
