基本指紋採集套件：雙色粉末

The two-sided powder picked up a clear thumbprint from my coffee mug that I couldn't see at all with regular dusting. It's surprisingly easy to get the hang of, and the contrast on dark surfaces is excellent.

The bichromatic powder is a game-changer—it turned dark grey on my black coffee mug and light grey on the white plate, so I could finally see the whorls clearly without straining. I’ve been practicing on every glass and doorknob in the house, and the color shift makes it oddly satisfying to watch.

The powder switched from grey to white perfectly on my black phone case, which made the ridges super clear to see. My kid was wowed dusting their toy car next—this kit makes learning forensics feel exciting.