Fluval Nitrite Test kit will test you Nitrites between 0.0 and 3.3mg per Litre. High amounts can lead to Nitrite Poisoning.
Nitrite develops when beneficial bacteria break down ammonia. This becomes extremely toxic to fish when high levels of nitrite persist in the aquarium for more than a week. Test weekly.
Kit includes:
1 x NO2/NO3 (17 ml)
1 x NO2/NO3 (10 ml)
1 x Pipette
1 x Glass test tube
Instruction booklet