First, I know API kits are not the high end standard we should be using. I have seen the math about getting the Salifert tests and of course I'd love to have a complete Hanna set. Sadly due to the pandemic my career in entertainment is destroyed and I can't afford those options.
I just wanted to post this picture of the difference between 2 API tests for Nitrate. One I just bought on the right and the one on the left doesn't expire for 6 more months. The one on the left is obviously wrong though and much darker than it should be.
If you are also using API and your kits expire this year, you might need to get new ones now.
I just wanted to post this picture of the difference between 2 API tests for Nitrate. One I just bought on the right and the one on the left doesn't expire for 6 more months. The one on the left is obviously wrong though and much darker than it should be.
If you are also using API and your kits expire this year, you might need to get new ones now.