Mar 31, 2021 · The YSI Professional Plus handheld has been discontinued as of March 31, 2021. The direct replacement is the ProQuatro multiparameter handheld. See the FAQ tab below or visit the ProQuatro page for more information.

Read more about why you should upgrade from Pro Plus to ProQuatro. The ProQuatro Multiparameter Handheld was designed to be used with the 4-port Quatro cable. Combine 4 sensors on a single cable for comprehensive multiparameter sampling to measure temperature/conductivity, DO, and any two ISEs (pH, ORP, ammonium, chloride, or nitrate). …

thank you for purchasing the YSI Professional Plus (Pro Plus). the Pro Plus features a waterproof (IP-67) case, backlit display and keypad, user-selectable cable options, USB connectivity, large memory with extensive site list capabilities, and a rugged, rubber over-molded case.

The YSI Professional Plus handheld multiparameter meter is the toughest, smartest and most versatile water quality meter available.

The technology-smart YSI Pro Plus has all the built-in support you’ll need for the lab or field. It provides multiple languages, detailed GLP data, on-screen Help to eliminate the need for a bulky manual, sensor diagnostics, up to six-point auto-buffer recognition, re-cal prompts, user-defined auto-stable function,

The YSI Professional Plusaccommodates any combination of Pro Series probe, cable, and accessory. This compact handheld includes multiple languages, detailed GLP data, on-screen Help functionality, auto-buffer recognition, mil-spec connectors, re-cal prompts, auto-stable and security passwords to help make your job easier.

The Quatro cable attached to the Pro Plus allows you to utilize 4-ports to measure temperature/conductivity, DO, and any two ISEs among pH, ORP, ammonium, chloride, or nitrate creating an extremely powerful handheld multiparameter instrument.

Choose from 22 Pro Plus kits. Kits include everything from lab to field (or both), single to multiparameter, or U.S. to International versions and more. EPA approved for drinking water and wastewater compliance reporting.

YSI Pro 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.

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, and temperature.