YSI PRO20 Meter, Kits and Accessories

YSI Pro20 Dissolved Oxygen/Temperature Portable dissolved oxygen meter for the lab or field! Rugged and reliable, the YSI Pro20 provides everything you need in a handheld dissolved oxygen instrument. User-replaceable sensors and cables, 50 data set memory, and convenient One Touch Cal feature makes it user-friendly. Mil-spec (military spec) connectors, IP67 waterproof and rubber over-molded case, and 1-meter drop tests ensure the instrument remains in your hands to provide years of sampling even in the harshest field conditions.



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Fast response times allow you to complete your sampling routine quickly, saving time and money:

  • 3-year instrument; 2-year cable warranty
  • User-replaceable cables and sensors. Choose polarographic or galvanic for the field or a self-stirring BOD probe for the lab.
  • One Touch Cal allows easy DO calibrations within 3 seconds with the press of a button. Automatic barometric pressure compensation.
  • Stores 50 data sets; no need to write down data
  • Graphic, backlit display and glow in the dark keypad.
  • Available with 1- 4- 10- 20- 30- and 100-m cable lengths standard (special order up to 100-meter cables in 10-meter increments). •
  • Tough. IP67, impact-resistant, waterproof case even without the battery cover. Rubber over molded case provides extra durability. Military spec connectors.
  • A true field instrument - the display is visible with polarized sunglasses on.
  • Quick response times; 95% response time in approximately 8 seconds with standard membrane (fastest response time in the market).
  • Multiple languages include English, Spanish, French, and German.

The Pro20 is an ideal meter for field work and lab BODs. Tough, smart and versatile.

Parameters: Dissolved Oxygen % and mg/L (electrochemical) Temperature BOD (biochemical oxygen demand)