Pen pH Meters

Economy Pen pH Meter
Economy Pen pH Meter
Model: MA-257
Price: $54.00
Standard Pen pH Meter
Standard Pen pH Meter
Model: MA-258
Price: $96.00

Pen pH meters from Ohaus provide accurate, straightforward operation at an affordable price. Units show pH measurements in the 0 to 14pH range on the large, easy to read LCD display. The pocket-size meters are constructed with a durable ABS housing, a protective cap to safeguard the sensor, and automatic shutdown feature that preserves battery life. Starter pen meters endure prolonged use in rugged environments and feature IP67 waterproof design to prevent water damage when dropped in liquid. A wrist strap is included. The meters operate for approximately 200 hours on four included AG13 button-cell batteries.  Working Environment for both units is 50°F to 104°F (10°C to 40°C) and 85%RH, non-condensing. Product Dimensions: 1.8x7.3x1.5in (45x185x38mm) WxLxH

Economy Pen pH Meter has range of 0 to 14x0.1 pH and accuracy of ±0.1pH. The built-in electrode is factory calibrated with no need for use of Buffer Solution, and the meter is not equipped with temperature measurement or compensation functions. Single-line LCD display.

Standard Pen pH Meter range is 0 to 14 x0.01ph with ±0.05pH accuracy. The built-in electrode features 3-point calibration using 4.01, 7.00, and 10.01 buffers. This meter has temperature compensation with range of 0 to 99.0°C (32.0 to 210.2°F). Dual display shows pH and temperature values.

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