Tested my SN that I originally bought in end of 2020 using the nitrite fish tank test, I'd opened it once or twice before for blood test. I was worried it would have turned into nitrate by now, the first test I accidentally did the nitrite too high (because my test only tested for half the amount than the usual 10), so the first time it was reading nothing and I totally freaked out, but I just tested it again with the proper ratios and it was actually the higher end. Anyway I thought that information would be useful, obviously always test. I got my SN from a chemist so I knew it was always high purity, but i was really worried about how long it had been/and that i had opened it before. Also it's a plastic bottle, but not like the ones people usually post, so the airtightness/seal when I closed it was probably more regulated than the bottles other people have maybe even if it's not glass.
Anyway I thought that would be helpful for people here.
Anyway I thought that would be helpful for people here.
