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Portable Multiparameter - ProQuatro

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The YSI ProQuatro is a universal handheld multiparameter water quality meter, designed to be tough, smart and versatile.
With up to four probes connected to a single cable, the ProQuatro can measure up to 12 parameters: dissolved oxygen, conductivity, specific conductance, salinity, resistivity, total dissolved solids (TDS), pH, ORP, pH/ORP combination, ammonium (ammonia), nitrate, chloride and temperature. This coupled with the plethora of accessories and user customizations creates an instrument of outstanding versatility and value.

The addition of a USB port makes the ProQuatro one of the smartest instruments in the ProSeries. Gone are the days of the comm saddle; now users can simply upload their data directly to a flash drive for easy access whether that be in the field or the lab.

The YSI ProQuatro is a field rugged water quality instrument designed for spot monitoring, profiling and low flow purging applications.

  • Cable holds 4 Professional Series sensors for temperature/conductivity, dissolved oxygen and a choice of any two ISE’s among pH, ORP, ammonium, nitrate or chloride.
  • Rugged and waterproof Military Spec (MS) connectors to connect to the Professional Plus instrument.
  • Simple, user-replaceable cables and sensors. Choose either polarographic or galvanic DO sensors.
  • Weighted guard ensures correct depth while protecting the sensors.
  • Choose among 1-, 4-, 10-, 20- and 30-meter cable lengths.
  • Cable management kit included on any cable 4-meters or longer.
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