The Traceable 4277 Calibrated pH/ORP Meter (98767-09) is a compact handheld instrument for pH, ORP and temperature measurements in water quality, wastewater and environmental applications. It measures from pH 0 to 14 with 0.01 pH resolution and ±0.02 pH accuracy, while its IP67 housing and supplied field kit support portable testing.
Key Features
- Accurate pH measurement, covering pH 0 to 14 with ±0.02 pH accuracy
- Fine 0.01 pH resolution, supporting detailed measurement of changes in sample acidity or alkalinity
- Flexible one-, two- or three-point calibration, with NIST and USA buffer recognition
- Combined pH, ORP and temperature probe, supporting multiple water quality measurements with one handheld instrument
- Automatic temperature compensation, helping correct pH readings as sample temperature changes
- Temperature measurement from 0 to 60 °C, with 0.1° resolution and ±1 °C accuracy
- 25-point measurement memory, with a date and time stamp for each stored result
- IP67 protection against dust and water, supporting use in demanding laboratory and field environments
- Compact stick-style design, sized for convenient one-handed operation
- NIST-traceable calibration certificate, supplied with data from an A2LA-accredited calibration laboratory
- Complete portable testing kit, including a pH/ORP probe, six One-Shot pH buffers, batteries and a hard-sided carrying case
- Up to 25 hours of battery operation, powered by two included CR2032 lithium batteries
Note: The optional 1 m probe extension cable, part 98768-07, is not included.
Benefits
- Begin routine pH and ORP testing with the core probe, calibration buffers, batteries and carrying case supplied together.
- Take portable measurements in wet, dusty or outdoor locations with the protection provided by the IP67-rated housing.
- Store and review up to 25 time-stamped readings without manually recording every result at the sampling point.
- Select one-, two- or three-point calibration to suit the required measurement range and testing procedure.
- Reduce the effect of sample-temperature changes on pH readings through automatic temperature compensation.
- Carry and operate the compact meter easily during environmental surveys, wastewater checks and water quality testing.
Why Choose the Traceable 4277 Calibrated pH/ORP Meter (98767-09)?
The Traceable 4277 Calibrated pH/ORP Meter (98767-09) combines calibrated pH accuracy, ORP capability, temperature compensation and field-ready protection in one portable instrument. Its supplied probe, calibration buffers, batteries, case and traceability certificate provide a practical package for routine laboratory and field testing. John Morris Group can assist with supply, replacement probes and suitable accessories.
