Water testing · Liquid test kit

Seachem MultiTest Nitrite/Nitrate

Reads nitrite and nitrate in one kit, over 75 tests.

Reagent kit that reads nitrite down to under 0.1 mg/L and nitrate down to under 0.2 mg/L, in fresh or salt water.

Consider: No ammonia: pair it with MultiTest Ammonia or another ammonia test.

US version. Check what’s in the box before you buy.

Drawing of a water test kit (not a photo of the Seachem MultiTest Nitrite/Nitrate)

What it tests

Tests for
Nitrite and nitrate
Reading range
nitrite down to under 0.1 mg/L, nitrate down to under 0.2 mg/L
In the pack
over 75 tests
How to read it
Readings are given as nitrite and nitrate, not as nitrogen: divide by 3.3 and 4.4 to compare with a kit that reports nitrogen.

Before choosing this model

  • Seachem says nitrite should be undetectable in an established tank (it can pass 20 mg/L while a tank cycles) and advises keeping nitrate under 20 mg/L.

What Seachem doesn’t publish

  • Seachem doesn’t print the highest reading on the chart. Check it in the box.

In a new tank the readings that matter most are ammonia and nitrite, so check the kit reads both, or add a test that does: see how to test your water.

Have a reading? See what it means for your fish and what to do today.

Included items & upkeep

  • six-cavity test plate
  • color chart with a sliding window
  • reference sample

Plan for the routine work

  • If you think the kit reads wrong, test the reference sample in place of tank water.

Check the use-by date printed on the pack before you trust a reading: old test solutions and strips can read wrong. Replace the kit once it is past that date.