Digital pH Meters for Field Testing
Pen pH meters from Ohaus provide accurate, straightforward operation at an affordable price and are useful in field or lab for soils classification and other applications. 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, protective cap to safeguard the sensor, and automatic shutdown feature that preserves battery life. Pen meters endure prolonged use in rugged environments and feature IP67 waterproof design to prevent water damage. A wrist strap is included. The meters operate for approximately 200 hours on four included AG13 button-cell batteries. Working environment is 50°F to 104°F (10°C to 40°C) and 85%RH, non-condensing.
MA-258 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 Buffer Solution, available separately. 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.
Features:
- Easy-to-read display
- ABS housing
- Automatic shutdown feature preserves battery life
- IP67 waterproof design
- Battery-powered
Included Items:
- Standard Pen pH Meter
- Four AG13 button-cell batteries
- Wrist Strap
Accessories:
- Buffer Solutions for pH Meters used only with MA-258 Standard Pen model
Specifications
- Power Supply: Four AG13 button-cell batteries
- Product Dimensions: 1.8 x 7.3 x 1.5in (45 x 185 x 38mm) WxDxH
- Estimated Shipping Weight: 2.0lb (0.91kg).
Meets Standard(s):
- ASTM D4972
- AASHTO T 289