Mostly they (stores) do not have those tests, but call and ask.
If you want to get into testing those parameters, get the kits yourself. There are enough materials in them for you to run quite a few tests, and by the time the test kit expires you will have all the testing you want to bother with.
Testing is interesting to about one test kit worth of reagent.
I got quite a good handle on how my tanks were running that way, then switched over to the much maligned test strips. They test most of the things I wanted to monitor, quicker, cheaper than the test tube/reagent tests. And I know how to interpret them for my water. So when that one pad turns some odd color that is not on the response sheet, I know what it means.
And the plants are still there, live 'test strips' always ready to be 'read'.