DOS-118A ppb level portable dissolved oxygen meter is electrochemical analyzer of polarographic measuring principle. Measurement of oxygen in the gas, can also measure the dissolved oxygen in aqueous solution. The oxygen concentration in the gas (unit%) used for the measurement of grain, fruit, herbs warehouses, tunnel, air defense and naval vessels, also used to measure the pulmonary function of the medicine, power station, metallurgy, chemical and other boiler combustion process oxygen concentration in the gas phase.
