Seachem ammonia alert badge doesn't work

[BilboB]

Starts yellow.
Put in my QT: turns green ("alert").
Fish die on day 5: still green.
Take out of tank, put in water: still green.
Put in new QT along with ammonium chloride: still green.

 

[Garf]

Starts yellow.
Put in my QT: turns green ("alert").
Fish die on day 5: still green.
Take out of tank, put in water: still green.
Put in new QT along with ammonium chloride: still green.

Which part of this makes you think it's not working? Can you drop it into a cup of fresh saltwater with a few mls of vinegar? You've gotta leave it for a few hours but the lower pH would reduce any amount of free ammonia present in the salt mix and get it to turn yellow, if it's working.

 

[Mebbid]

Ammonium chloride converts basically instantaneously into free ammonia when it's added to water (ph depending) idk what you're seeing that says it's incorrect. It takes up to 2 days to start working, and at minimum 4 hours to show a decreasing level of ammonia back to safe.