YSI Multiparameter Instruments

Browse the selection of YSI Multiparameter Instruments available through Equipco. Available Multiparameter Instruments include the Model 556 MPS, Pro1020, Pro1030, Pro2030, ProDSS, Professional Plus, and the ProSolo. Equipco offers range of post-sales support and repair options for most of the products we sell at the best prices, backed by our “Best Price Guarantee”.

Featured Multiparameter Instruments


YSI's most versatile and advanced portable water quality meter, the ProDSS is capable of measuring all critical water quality parameters including turbidity and depth.

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YSI Professional Plus

YSI’s Professional Plus is a highly versatile multiparameter water quality instrument featuring interchangeable cables and probes for a variety of tasks in both the field and the lab.

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YSI ProSolo

YSI’s ProSolo Optical Dissolved Oxygen Meter features highly accurate optical DO sensor technology which requires no flow dependence or stirring. Attached sensors are automatically recognized and store calibration data, allowing them to be swapped between devices without recalibration.

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YSI Multiparameter Instruments

YSI Model 556 MPS

The YSI 556 has been discontinued and replaced by the Professional Plus. Refurbished instruments are available, please call for more information. New replacement probes and instrument service will continue to be offered.

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YSI Pro1020

The YSI Pro1020 provides field measurements for both DO and pH (or ORP) simultaneously. It features built in barometric compensation and all features standard to YSI's Professional series line.

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YSI Pro1030

The YSI Pro1030 is a field instrument for the measurement of Conductivity along with either pH or ORP. It features automatic temperature compensation and can calculate both salinity and TDS.

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YSI Pro2030

The YSI Pro2030 provides field measurements of DO, conductivity, and temperature. It features both barametric pressure and salinity compensation for DO measurements.

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RKI Eagle 2

Multiple Gas Monitor

RKI’s Eagle 2 is an advanced portable gas detector capable of monitoring up to six sensors simultaneously including a PID. 16 different sensors are available providing for hundreds of configuration possibilities.

Landtec GEM5000

Landfill Gas Analyzer

The GEM5000 is the latest in the line of Landtec's GEM landfill gas analyzers. Now lighter, smaller, more accurate, and with an improved user interface, the only instrument you need to take into the field just got even better.

Levelogger 5

Water Level Datalogger

Advanced and durable, the Levelogger Edge is the latest water level datalogger from Solinst. An all new sensor design manages to achieve excellent accuracy while being more robust then previous models and remaining economical.

RAE MiniRAE 3000

Handheld PID Monitor

RAE Systems PIDs are known worldwide for their incredible reliability, accuracy, and features. The MiniRAE 3000 is the latest flagship model featuring the widest range of any handheld PID available and built in correction factors for over 200 compounds.

MultiRAE Series

Multiple Threat Monitor

The MultiRAE Series of handheld gas detectors includes three models for detection of up to six threats simultaneously. Choose from 25 toxic sensors, 3 PID sensors with a 9.8 eV lamp option, and even a gamma radiation sensor.

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