Ever wonder how that two part solution works or if you can make your own? The answers are in here.
Step 1: You Will Need....
Sodium Hydroxide (lye)You can use "Red Devil" drain cleaner or buy it on eBay.
Luminol, also available on eBay.
Hydrogen Peroxide (3% drugstore variety)
Sodium Ferrocyanide, also known as tetrasodium hexacyanoferrate or sodium hexacyanoferrate (II), is
(of course) also available on eBay.
Container to mix in. DO NOT USE METAL!!! They may react with the sodium hydroxide. Especially aluminium.
Generally this in non toxic, but that isn't an excuse for abuse!