HI991001 Waterproof Portable pH/Temperature Meter ±0.02pH Accuracy, 0.01pH Resolution, +16pH Max, +105 °C Max
Manufacturer: Hanna Instruments

The HI991001 is a compact, waterproof, portable pH/temperature meter that is supplied complete including a rugged carrying case and a unique titanium body pH electrode that has a built-in temperature sensor. The meter features a large, dual level LCD display for easy viewing of the pH, temperature, and status indicators. 

Titanium Body pH Electrode 
Easy One-Hand Operation
1200-Hour Battery Life

HI1296D pH Electrode
The HI991001 is supplied with the pre-amplified titanium body pH/temperature electrode. The titanium body is resistant to many aggressive chemicals including those used in plating and chemical manufacturing. 

The HI1296D pH electrode also features an extractable cloth junction. The extractable cloth junction of the HI1296D allows for the renewing of the junction. Simply extract ⅛” of the junction by pulling on the junction will expose a new portion. Any clogging that was present will be cleared and the response time will be back to normal extending the life of the pH electrode.

Titanium body that is resistant to harsh chemicals
Pre-amplified and matching pin for resistance to electrical noise

pH range is from -2.00 to 16.00 pH
Automatic Two-Point Calibration
All readings are compensated for variations in temperature
Freezes reading on the display to allow recording of measurement
BEPS (Battery Error Prevention System)

Low Battery Indicator
When the level is below 5%, the  battery symbol on the LCD blinks to indicate a low battery condition.
Auto-Off
Meter automatically shuts off after 8 minutes of non-use to maximize battery life
Specifications
pH Range -2.00 to 16.00 pH
pH Resolution 0.01 pH
pH Accuracy ±0.02 pH
pH Calibration automatic, at one or two points with two sets of standard buffers (pH 4.01 / 7.01 / 10.01 or pH 4.01 / 6.86 / 9.18)
Temperature Range -5.0 to 80.0°C / 23.0 to 176.0°F
Temperature Resolution 0.1°C / 0.1°F