Rapid breathing at the water surface is an unmistakable sign of oxygen deficiency. Unfortunately, it may already be too late to act appropriately.

The sera O2 oxygen test monitors the actual oxygen level in the water within minutes, allowing timely action. Additionally, sera O2 plus provides a rapid oxygen supply.

Sufficient for approximately 60 measurements.

• Usage Information

www.sera.de/fileadmin/user_upload/manuals/sourcefiles/04914_sera_O2-Test_2015-06_INT.pdf