Okay, let’s get a little nerdy. Grab a clear glass bowl and fill it with tap water. Add one teaspoon of plain liquid bleach (no fancy scents, just chlorine). Swirl it around. Wait 15 minutes.
If the water turns cloudy or develops a rusty sediment, you’ve got iron. The bleach reacts by oxidizing the iron, making it visible. It’s like giving the iron a tiny lightning bolt to show its true colors. Fun, right?
This test isn’t super precise—it doesn’t tell you how much iron is there. But it’s a fantastic, zero-cost way to say, “Yep, you’re here, iron buddy.” Think of it as an at-home rock concert for metal particles.