Homebrew PCBs

>> No, not the food obviously, though there are differing opinions on this


>
> Is it the F Xi Xn T... rating with the nice pictures in the UK too?
> I didn't know it was called COSHH
>
> ST
>


While we are at hazard ratigs.
Only a few days ago i was curious how those "Salmiak" stones are meant to  
be used to clean copper tips on soldering irons.
So i did a google search.

Turns out salmiak (ammonium chloride) has Xn rating, which is something i  
try to avoid. (bad effects on health).

Turns also out they put it in food stuff!

In the one hand you want to avoid nasty stuff in the workshop, and then  
they mix it right into food without sticking a Xn label on. I think they  
definitely should have to label food. Also, it shows this rating doesn't  
tell you too much.

ST