Best place to pick up a nitric acid test kit

[Sultan Pepper]

I'm looking to get onto something to test a couple of my rounds. Two of my stack seem to be bronzing off a little bit which I'm thinking isn't a good sign.


Seems to be lots of different ways out there to test (I'm sure this would've been posted before but the search function brought me nothing). Any really straight forward ways other than the nitric acid anyone can recommend?

 

[fishball]

I'd advise against using Nitric Acid, you really need to have proper chemical laboratory equipment to do it or you risk hurting yourself.

Use specific gravity test, do a search.