Works as seen on youtube etc. Pricey.
Works as described. Purchased to check if a rock I found had nickel in it, which is a signature for meteorites.  Looses 1 star because of the price. Once you use it, which only takes a few drops,  you have $40 of stuff you likely wont ever use again. It has a scary smell, made me wonder how toxic it may be.
Rating: 4 stars