Surface Water Monitoring

“Across the country, volunteers monitor the condition of streams, rivers, lakes, reservoirs, estuaries, coastal waters, wetlands and wells, producing reliable and valuable data for groups to better assess the ecological health of our rivers. YSI meters and equipment have provided an important and effective tool for this growing citizen’s volunteer monitoring movement during the past two decades. We appreciate YSI’s support of local monitoring efforts and surmise that the fish and wildlife appreciate this support even more”. Steve Dickens, Health & Environment Director, River Network

		6600V2 Make the most of your environmental monitoring. The YSI 6600 V2 data sonde is the most comprehensive water quality monitoring equipment available with simultaneous measurement of conductivity (salinity), temperature, depth or level, pH/ORP plus...

		6820 V2 Compact Sonde for Field Sampling The YSI 6820 V2 is a cost-effective data sonde for profiling and spot-checking water quality in rivers, lakes, wetlands, wells, estuaries, and coastal waters.

		600OMS V2 Single-Parameter, Low-Cost Optical Monitoring System Measure optical dissolved oxygen, chlorophyll, blue-green algae, rhodamine, or turbidity in combination with temperature, conductivity and depth. Designed for use in fresh, sea or polluted waters, the 600OMS V2 data sonde utilizes the field-proven YSI sensors and incorporates innovations in water quality sensor configuration such as a conductivity and temperature module that fits into the sonde body.

		600XL V2 and 600XLM V2 Small Packages - Economical Sampling or Logging Both the YSI 600XL V2 (sampling) and the YSI 600XLM V2 (logging) data sondes offer economical solutions in small packages for surface water and ground water applications. Both models easily fit into 2-inch wells and measure a range of fundamental parameters, including oxygen - with the YSI ROX™ optical dissolved oxygen sensor - and level, using a highly-accurate vented sensor.

		600XL and 600XLM Small Package - Economical Sampling or Logging Both the YSI 600XL (sampling) and the YSI 600 XLM (logging) are economical solutions in small packages for surface water and groundwater applications. Both easily fit into 2-inch wells and measure a range of fundamental parameters, including oxygen - with the YSI Rapid Pulse™ stirring-independent dissolved oxygen sensor - and level, using a highly-accurate vented sensor.

		600QS The Quick Solution to Handheld Sampling Combined for convenience, the YSI 650 MDS display-datalogger and the YSI 600R sonde allow you to collect 11 parameters simultaneously in real time.

		600R Water Quality Sampling Sonde The YSI 600R provides water quality sampling in a small package for surface water and ground water applications. With a diameter of less than two inches (4.2 cm), the 600R easily fits into wells.

		600LS Precise Level Measurement in a Compact Sonde Measure level, flow, temperature and conductivity with the compact 600LS sonde. Rugged and waterproof, the YSI 600LS is perfect for tide gauge monitoring, wetlands level applications, ground water, estuaries, rivers, and more.

		Professional Plus Handheld Multiparameter Instrument The YSI Professional Plus handheld multiparameter meter provides extreme flexibility for the measurement of a variety of combinations for dissolved oxygen, conductivity, specific conductance, salinity, resistivity, total dissolved solids (TDS), pH, ORP, pH/ORP combination, ammonium (ammonia), nitrate, chloride and temperature. Also a very powerful lab instrument for BODs, pH and ORP.

		ProODO Handheld Optical Dissolved Oxygen Instrument "We are very pleased with the convenience, usability, and ruggedness of the ProODO; and highly recommend it to anyone needing to monitor dissolved oxygen." The YSI ProODO^TM handheld DO meter provides extreme durability for measuring dissolved oxygen with optical, luminescent based technology for field or lab.

		Pro20 Lab / Field Dissolved Oxygen The Pro20 provides everything you need in a handheld dissolved oxygen meter. Ruggedness, simplicity and reliability are the cornerstones of the instrument's design.

		Pro2030 Field Dissolved Oxygen / Conductivity "YSI did a great job on this design. Our staff of about 20 people consists of old veterans to recent college grads, and not one so far has had a negative comment." The Pro2030 provides everything you need in a handheld dissolved oxygen meter that automatically compensates for changes in salinity values. Rugged, simple and reliable. Measure DO, salinity, conductivity, specific conductance, TDS, barometric pressure and temperature.

		556MPS Handheld Multiparameter Instrument Rugged, reliable and waterproof, the YSI 556 MPS (Multiprobe System) combines the versatility of an easy-to-use, easy-to-read handheld unit with all the functionality of a multiparameter system.

		pH100 Handheld pH or mV Instrument YSI's new EcoSense® product line of compact, handheld instruments includes the pH100 meter. For simple, one handed operation for pH readings or mV values and temperature the pH100 is a logical choice.

		9300 / 9500 Photometer Waterproof, rugged, easy to use photometers The YSI 9300 and YSI 9500 are economical photometers in small packages for any application. These portable photometers allow you to easily take readings directly in the field for 100+ parameters.