Nitrate ( NO3+)
Readable range 0 to 4mg/l.

Nitrite is another deadly toxin for Koi if left unchecked, but can present particularly in new ponds for months. This kit comprises of 50 foil sealed tablets, 1 x crusher rod, 1 x 10 ml square test tube with cap, 1 x plastic acetate colour match chart with colour breaks at 0, 0.1, 0.25, 0.5, 1, 2, 4 mg/l.

Full instructions and water quality recommendations.

Supplied in clear rigid refillable plastic box.

• Nitrate in Ponds