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YSI Professional Series Meters

The easiest, most versatile handheld solution for spot sampling in the field or lab. Simply choose the Pro Series model, cable length, and probes that are right for your specific application – from aquaculture to surface water to wastewater and more.

 

YSI Professional Plus Multiparameter Meter

YSI Professional Plus Multiparameter Meter

The flagship of the Professional Series, YSI Professional Plus accommodates any combination of Pro Series probe, cable, and accessory. This compact handheld allows you to instantly change probes and cables. You determine what you want the instrument to measure and display.

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YSI Professional Series Specifications
YSI Professional Plus User Manual
YSI Amplified pH & pH/ORP Sensor Specs

Pro1020, Pro1030, Pro2030
Pro1020, Pro1030, Pro2030

YSI Pro1020

pH, ORP, ORP/Redox, Polarographic or Galvanic DO sensors, and Temperature.

YSI Pro1030

pH, ORP/Redox, Conductivity, Specific Conductance, Salinity, Total Dissolved Solids (TDS), and Temperature.

YSI Pro2030

DO, Conductivity, Specific Conductance, Salinity, Total Dissolved Solids (TDS), Barometer and Temperature.

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YSI Professional Series Specifications
YSI Pro1020 User Manual
YSI Pro1030 User Manual
YSI Pro2030 User Manual
YSI Amplified pH & pH/ORP Sensor Specs

YSI ProDSS
Multiparameter Sampling Instrument
YSI ProDSS with 4-Port Bulkhead

The YSI ProDSS is a rugged single or multiparameter water quality instrument designed for use in applications that include surface water, groundwater, coastal, and agriculture. The ProDSS features optional user-replaceable digital smart sensors that are automatically recognized when connected to the instrument. The optional GPS function, a broad range of sensors, and varying cable options allow for complete customization of the ProDSS.

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YSI ProDSS Multiparameter Specifications
YSI ProDIGITAL User Manual
YSI ProDIGITAL Quick Start Guide

YSI Pro10, Pro20, Pro30
Pro10, Pro20, Pro30

YSI Pro10

pH or ORP/Redox, and Temperature.

YSI Pro20

DO and Temperature.

YSI Pro30

Conductivity, Specific Conductance, Salinity, Total Dissolved Solids (TDS), and Temperature.

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YSI Professional Series Specifications
YSI Pro20/Pro20i User Manual
YSI Pro30 User Manual
YSI Amplified pH & pH/ORP Sensor Specs

YSI ProSolo ODO/T & ODO/CT

Optical Dissolved Oxygen Meters and
ProOBOD Probe
YSI ProSolo ODO/T & ODO/CT
ProSolo ODO/CT & ProSolo ODO/T

The ProSolo DIGITAL water quality meter features an advanced optical dissolved oxygen (ODO) probe that can be combined with either a temperature (ODO/T) or conductivity (ODO/CT) sensor. The ProSOLO handheld meets the demands of field work with a large LCD graphic display, waterproof case and interchangeable military-spec cable connector. User-replaceable cables are available in lengths that range from 1 to 100 meters.

YSI ProOBOD Probe
YSI ProOBOD Probe inserted into BOD bottle and connected to a YSI Pro.
All are mounted to the YSI Lab Dock.

The YSI ProOBOD probe is used with the YSI ProODO handheld optical dissolved oxygen instrument. The ProOBOD easily connects to the ProODO handheld and makes it convenient to conduct lab BOD's with a very compact footprint.

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YSI ProSolo ODO/T & ODO/CT Specifications
YSI ProDIGITAL User Manual
YSI ProDIGITAL Quick Start Guide
YSI ProOBOD User Manual

YSI Pro20i Dissolved Oxygen/Temperature

YSI Pro20i Dissolved Oxygen/Temperature

Easy to use, rugged and reliable, the YSI Pro20i provides everything you need in a handheld instrument for the measurement of dissolved oxygen (DO). A true field instrument with IP-67 waterproof, rubber over molded case, military spec connectors and 1-meter drop tests ensure durability to provide years of sampling even in the harshest field conditions.

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YSI Pro20i DO/Temp Specifications
YSI Pro20i User Manual