Revealing Fingerprints With Silver Nitrate
Another Method from the same chemistry book.
Weigh 0.3 grams of AgNO3.
And pour it into 10ml of distilled water.
I sprayed it and I shone it with an LED lamp (a UV lamp is better).
Now I got this:
I didn’t know why it was a line like that, but it worked.
I didn’t find any other fingerprints and the fingerprint that I have is hard to see.
Well, this experiment is considered as a fail. I rather use the iodine fuming method that I used the last time. The silver nitrate reacts to the salt on the fingerprint and produces silver chloride, just like on the skin.