YSI Dissolved Oxygen and Conductivity Meter

The YSI Pro1030 provides everything required in a handheld instrument for the measurement of either pH or ORP along with temperature, conductivity, specific conductance, salinity and total dissolved solids (TDS).
User-replaceable sensors (pH and ORP sensors) and cables and convenient calibration routine feature makes it extremely 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. The feature set of the Pro1030 results in a low total cost of ownership over the life of the product and proves that it is smarter, tougher, and more versatile.
Includes: 
YSI Pro1030 Handheld pH/Conductivity Meter
Operations manual
C-cell batteries
Specifications: Cable Lengths: 1- 4- 10- 20- and 30-m lengths (3.28, 13.1, 32.8, 65.6, and 98.4 ft.). Certifications: RoHS, CE, WEEE, IP-67, 1-meter drop test. Connector: MS (military spec) waterproof with bayonet lock. Data Memory: 50 data sets. Dimensions: 8.3 cm width x 21.6 cm length x 5.6 cm depth (3.25 in x 8.5 in x 2.21 in). Languages: English, Spanish, Portuguese, French. Power: 2 alkaline C-cells providing approximately 425 hours of battery life depending without backlight usage; low battery indicator with approximately 1 hour left. Warranty: 3-year instrument; 2-year cable; 1-year pH and ORP sensors. Waterproof: IP67 (even with the battery cover off). Weight with Batteries: 475 grams (1.05 lbs). Conductivity Reference Temp: Adjustable; range 15°C to 25°C. Specific Conductance Temp Comp: 0 to 4%.