Proaqua Test JBL Refill N03

Laboratory comparator system to compensate the inherent water colour: fill glass vials with sample water, add reagents to one vial, place vials in holder, read values off colour chart Use: when setting up a new freshwater aquarium: 1 x weekly.
When setting up a new marine aquarium: 1 x weekly.
With green algae problems.
You will find detailed information and troubleshooting tips about water analysis on the JBL website in Essentials/Aquarium or Pond.
Package contents: 1 nitrate test for approx. 40 measurements, incl. 2 reagents, 2 glass vials with screw caps, syringe, dosing spoon, comparator block and colour scale.
Reagent refill separately available.