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YSI® 63 Handheld pH and Conductivity Meter


The replaceable, rugged pH electrode has a one year warranty. The tough, watertight case withstands the rigors of field work. A built-in storage chamber protects the probe when not in use. A bright, backlit display is easy to read.

The YSI 63 pH instrument has memory for up to 50 readings. Includes a super, stable 4-electrode conductivity sensor for true field work.



Materials: ABS, Stainless Steel, and other materials


Height: 9.5 inches (24.13 cm)

Thickness: 2.2 inches (5.6 cm)

Width: 3.5 inches max. (8.89 cm)

Weight: 1.7 pounds (w/ 10’ cable) (.77 kg)

Display: 2.3”W x 1.5”L (5.8 cm W x 3.8 cm L)

Power: 6 AA-size Alkaline Batteries (included)

Approximately 100 hours operation from each new set of batteries

Automatic shutoff after 10 hours without a key press

Water Tightness: Meets or exceeds IP65 standards

Probe Operating Environment

Medium: fresh, sea, or polluted water and most other liquid solutions.

Temperature: -5 to +75 °C

Depth: 0 to 10, 0 to 25, 0 to 50, or 0 to 100 feet (depending on cable length)

Meter Ambient Operating/Storage Temperature: -5 to +45 °C

System Performance Specifications:


Adjustable Conductivity Reference Temperature: 15°C to 25°C 35

Adjustable Temperature Compensation Factor for Conductivity: 0% to 4%

pH Response Time: 3 sec for 95% of the change at 25°C

Temperature Response Time: 20 sec for 95% of the change

Temperature Compensation: Automatic

Range: User selected or Autoranging for Conductivity

Data Storage: 50 points with ID number.

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