Especially for occasional measurements and hydrographical field surveys Observator offers many portable measuring instruments. These handheld devices are rugged, battery powered and available in a robust carrying case.
YSI ProDSS: Multiparameter handheld meter with exchangeable sensors for many parameters; conductivity, dissolved oxygen, pH, algae, ammonia, chloride, nitrate and more.
YSI ProSwap: Handheld meter for one exchangeable ProDSS sensor.
YSI ProSolo: Handheld meter for (optical) measurement of dissolved oxygen.
YSI Pro30 CTD: Handheld CTD meter for conductivity and temperature.
YSI Pro20: Handheld meter for dissolved oxygen, either with Clark amperometric sensor or galvanic sensor or special BOD/CBOD sensor (Carbonaceous-Biochemical Oxygen Demand).
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