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Nutrient Monitoring

Continuous monitoring of nutrient levels provides crucial information about daily, seasonal and event based changes in water quality conditions, and can be a strong indicator on the overall health of the water body.  In recent years, monitoring of...

Coastal & Estuary

Measurement of water quality in coastal regions and estuaries is critical in the characterization of hypoxic ‘dead zones’ as a result of nutrient loading and algal blooms in the water bodies. Sediment loading analysis through turbidity measurement is...

ISE Nitrate

ISE Nitrate Sensor for Hydrolab Sondes. ISE is a reference electrode immersed in a solution of fixed ion concentration separated by a membrane containing a chemical compound that reacts with the ion of interest, measuring electrical potential that...

ISE Ammonia (Series 5)

ISE Ammonia Sensor for Hydrolab Sondes. ISE is a reference electrode immersed in a solution of fixed ion concentration separated by a membrane containing a chemical compound that reacts with the ion of interest, measuring electrical potential that...

ISE Chloride (Series 5)

ISE Chloride Sensor for Hydrolab Sondes. ISE is a reference electrode immersed in a solution of fixed ion concentration separated by a membrane containing a chemical compound that reacts with the ion of interest, measuring electrical potential that...

ISE Nitrate (Series 5)

ISE Nitrate Sensor for Hydrolab Sondes. ISE is a reference electrode immersed in a solution of fixed ion concentration separated by a membrane containing a chemical compound that reacts with the ion of interest, measuring electrical potential that...

Hydrolab Operating Software

The Hydrolab Operating Software is the PC-based application for interfacing with Hydrolab HL Series sondes, the Hydrolab Surveyor HL, and Hydrolab communications modules.  It is designed for intuitive water quality data collection, sensor...

ISE Chloride

ISE Chloride Sensor for Hydrolab Sondes. ISE is a reference electrode immersed in a solution of fixed ion concentration separated by a membrane containing a chemical compound that reacts with the ion of interest, measuring electrical potential that...

Oil & Gas

Monitoring natural water bodies surrounding oil and gas drilling activities like hydraulic fracturing is a key issue in environmental monitoring and regulatory compliance. Hydrolab multiparameter sondes can measure a variety of parameters pertaining...

Mining

Ensuring that pollutants from mining activities do not enter surrounding natural water bodies is a key issue in environmental monitoring and regulatory compliance. Hydrolab multiparameter sondes can measure a variety of parameters pertaining to...

ISE Ammonia

ISE Ammonia Sensor for Hydrolab Sondes. ISE is a reference electrode immersed in a solution of fixed ion concentration separated by a membrane containing a chemical compound that reacts with the ion of interest, measuring electrical potential that...

Turbidity Sensor

Hydrolab sondes use a self-cleaning turbidity sensor that measures from 0 to 3000 NTU and includes a user-programmable cleaning system to remove fouling or debris that could potentially affect readings.

Groundwater

Measuring groundwater level or depth-to-water is critically important for identifying long term trends, including declining water levels, saltwater intrusion, seasonal variations, aquifer recharge, artificial aquifer storage and recovery, and level...

Hach LDO® Dissolved Oxygen Sensor

Since 2002, Hach has established itself as the premier provider of luminescent dissolved oxygen (LDO) technology. Only Hydrolab multiparameter sondes feature Hach LDO technology – designed, manufactured, and supported by Hach in Loveland, Colorado....

OTT Water Quality Buoy

The OTT measuring buoy is specially designed for operation in combination with the HYDROLAB HL7 or HL4 multiparameter sondes. It is equipped with a data acquisition and remote data transmission unit as well as a mains-independent solar power supply....

Depth

Hydrolab sondes are available with integrated pressure sensors that provide depth measurements.

Urban Hydrology

Urban Hydrology deals with the specific aspects of the hydrological cycle in urban and industrial settings. This includes all natural water flows as well as the consideration of precipitation, storm water, groundwater, rivers, and lakes, but also the...

Sea-Bird Scientific HydroCAT-EP

The newest member of the HydroCAT family of water quality Sondes can also measure pH, turbidity and chlorophyll. By plumbing the pH sensor inline with conductivity, temperature and optical dissolved oxygen the HydroCAT-EP is capable of deployments up...

Stirrer

Stirrer for Hydrolab Sondes for the use with Clark cell

Chlorophyll a Sensor

The chlorophyll a sensor from Hydrolab is based on the Turner Designs Cyclops-7 submersible fluorometer. 

Rentals

Rental instruments are a perfect choice for short-term projects. All rental products are factory calibrated and tested before shipment. Weekly and monthly rates are available and the cost of the rental can be applied toward purchase of a...

Surface Water

Measuring water quantity and quality in surface water (open channels, rivers, reservoirs, lakes, and estuaries) is one of the foundations of hydrological monitoring and has been a focus of OTT Hydromet since its first  water current meters were...

pH Sensor

The Hydrolab pH sensor uses a glass bulb measuring electrode and refillable reference electrode.

There are two versions available:

• pH with standard reference uses a separate measuring electrode and reference electrode, each in their own sonde port
• pH...

Temperature Sensor

The Hydrolab temperature sensor is a variable resistance thermistor. The temperature sensor is included with every Hydrolab sonde.

About Hach Environmental

OTT Hydromet helps water resource professionals generate reliable data throughout the entire environmental water cycle.Our solutions focus around: Water Quality: Hydrolab multiparameter sondes for attended and unattended measurement of...

OTT Hydromet Water Quality Solutions

Hydrolab multiparameter sondes can measure water quality in either spot sampling or unattended, real-time data capture in surface water applications. Certain Hydrolab multiparameter instrumentation is also compact enough to fit in...