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556 Handheld Multiparameter Instrument

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Only available for Rent, price on enquiry.

556 Handheld Multiparameter Instrument

Price on request

Featuring a waterproof IP-67, impact-resistant case, the YSI 556 MPS simultaneously measures dissolved oxygen, pH, conductivity, temperature, and ORP.

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Featuring a waterproof IP-67, impact-resistant case, the YSI 556 MPS simultaneously measures dissolved oxygen, pH, conductivity, temperature, and ORP. Or, simply purchase the cable to measure DO, conductivity, and temperature if needed. The YSI 556 MPS conforms to GLP standards.

Multiparameter Instrument (carrying case (5061) and PC adaptor RS-232 included) used with the 556 handheld instrument.

Packed with Features!

Battery Options: The unit is powered by alkaline batteries or an optional rechargeable battery pack (YSI Part # 6118) with fast charge feature. (556-02)

Optional Barometer: Internal barometer can be user-calibrated and displayed along with other data, used in dissolved oxygen calibrations, and logged to memory for tracking changes in barometric pressure.

Carrying Case: The instrument comes standard with a soft-sided carrying case with enough space for the YSI 556 MPS, a 20-meter cable, and calibrating supplies.

Additional Features:

– Field-replaceable DO, pH, and pH/ORP probes
– RS-232 and Compatible with EcowatchTM for WindowsTM data analysis software
– Easy-to-use, screw-on cap DO membranes
– User-upgradable software from YSI website
– Three-year warranty
– Pair the 556 up with the 5083 flow cell and you have a complete groundwater package. The 5083 flow cell is extremely simple to connect to the 556 and cleans up even easier!

In order to ensure data quality be sure to use the 5580 Confidence Solution with the 556. Quickly check pH, ORP, and conductivity values to guarantee probe accuracy during important field studies.

The 556 also features menu-driven operation with multiple languages including Spanish, French, Italian, German, Norwegian, and English. Data management is simple with EcoWatch™ desktop software for tabular and graphical data representations.


Additional information

Connectivity/ Communications

RS-232 Serial


4 alkaline C-cells, Optional rechargeable pack


Manual Measurement

Available for Rent




Rent Only




We work with industry and government professionals to provide monitoring and sampling solutions for process improvement and to protect our planet’s natural resources.

We often get asked, what does YSI stand for? Well, YSI stands for Yellow Springs Instruments as a homage to our location in Yellow Springs, Ohio.

YSI’s environmental products provide high quality, high resolution data to better understand and manage our water resources. They are used for wastewater process control, climate change and drought studies, flood monitoring and warning, stormwater runoff monitoring, groundwater quantification and contamination, aquaculture production and source water safety. In addition to standard products, YSI’s custom integrated systems help customers obtain critical data in most any application. Tell us what you need and let us design and deploy a total system, even if you simply just want the data.

Our environmental products provide infrequent maintenance cycles, user interchangeable sensors, and field-rugged enclosures all backed up by a passionate and knowledgeable technical support team.

YSI Life Science and laboratory products are considered the Gold Standard for QC applications. They are used for process control, research and industrial applications by food and beverage, environmental, biofuels, biotech and pharmaceutical customers.

When purchasing YSI, you can expect proven products and technologies that provide true value and low TCO (total cost of ownership). Whatever your instrumentation needs, YSI is ready to provide a reliable solution. We know you are passionate about your work…we are equally passionate and enthusiastic about what we can offer to help you succeed.