How to Test Coke Purity

[Chubbzz]

How would I test how pure cocaine is without buying a test kit?

 

[Felonious Monk]

You could do the melt test like they do in Blow...
https://erowid.org/ask/ask.php?ID=3129

But the reality is that cocaine is more expensive than a test kit, so the least expensive method is a test kit.

 

[busted.produk]

Also the bleach water test can tell you a lot(by way of falling particles and different color changes) about benzoic ester content...
Give it a search...