Waterproof unit with large display. Complete in waterproof case.
The OxyGuard Handy Polaris TGP is a hand-held meter that measures the atmospheric pressure, the total dissolved gas pressure, the oxygen partial pressure and the temperature.
The Handy Salinity is a hand-held instrument specifically designed for aquaculture use.
The OxyGuard Handy pH is a hand-held, pocket size pH or redox meter.