Help Testing purity of SN

[virtualdreamplaza]

So I bought an aquarium test kit but it measures only up to 1mg/l, I'm not sure if this is enough and how can I test it exactly.. Should I just do a blood test and that's it?
Thinking of just not giving a fuck and just skip testing it.... ugh...

 

[Zecko]

I ordered two kilograms of SN. I had no idea it was so cheap, that's why so much... If I don't make it the first time. Purity at least 99%

 

[locked*n*loaded]

An aquarium test does not test purity of SN. You need to send it to a private lab for purity testing. The PPH has links to such labs.