sera Oxygen O2 Test Kit 15mL 60 Tests
Makes it easy to monitor the oxygen level in freshwater
Quick breatahing at the water surface is an unmistakable sign for an oxygen deficiency. Unfortunately, it may then already be too late for acting appropriately.
The sera O2-Test monitors the actual oxygen level in the water within minutes and allows for acting in time. sera O2 plus provides quick oxygen supply.
Sufficient for approx. 60 measurements.