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Waterproof ExStik® II Dissolved Oxygen Meter Kit
The DO600-K is a convenient kit which adds versatility for measuring dissolved oxygen in laboratories or out in the field with a 16' (5 m) extension cable and probe weight guard for taking easy measurements in tanks or streams.
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Hanna Instruments GroLine Waterproof Pocket pH/EC/TDS/Temperature Tester
All-in-one handheld tester for monitoring pH, nutrients, and water quality in hydroponic and agricultural systems.
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Multiparameter PH/EC/DO Turbidity Meter
This multiparameter meter is a waterproof portable logging multiparameter meter. The microprocessor based multi-sensor probe allows for the measurement of key parameters including pH, ORP, conductivity, dissolved oxygen, turbidity, and temperature. The complete system is simple to setup and easy to use.
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HALO2 Wireless Field pH Tester, PEI Body
Our HALO2 Wireless Field pH Tester has a durable PEI body and spherical sensing bulb, perfect for use in the field.
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Hanna Instruments GroLine Waterproof Portable pH/EC/TDS Meter
Portable multi-parameter meter for measuring pH, conductivity, and dissolved solids in agricultural and hydroponic systems.
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HALO2 Wireless General-Use pH Tester
The HALO2 Wireless General Use pH Tester has a refillable glass body and spherical glass sensing bulb made for users that prefer a low-maintenance laboratory-grade pH electrode.