API Pond Nitrite Test Kit, 180 tests

Nitrite is produced in the aquarium by fish waste and uneaten fish food. Low levels of nitrite inhibit respiration and suppress the immune system; high levels cause suffocation and fish death

liquid dropper bottle with child-resistant safety cap, easy-to-read instructions with information on how to test and how to correct unsafe water conditions, color chart and glass test tube with snap-tight cap.