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pH/Conductivity/Dissolved Oxygen Waterproof Meter HI98199


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For scientists and professionals who require precision in the field or on the production floor, the HI98199 is a versatile meter that can monitor pH, EC, and DO when paired with the respective probe. It’s the measurement-specific option you want with the rugged construction you need to give you years of flawless field data.
  • Backlit graphic LCD with on-screen help
  • Each probe transmits readings digitally to the meter, where data points can be displayed and logged.
  • An IP67-rated waterproof, rugged body makes this portable meter ideal for field use.


Optical Dissolved Oxygen Meter


Increased Traceabilty

Ensure that your data can be trusted with GLP data. Accessible through the menu, this data includes includes date, time, buffers/standards used for calibration, and slope characteristics of the last calibration.


Versatile Data Logging

The HI98199 allows you to store up to 45,000 continuous or log-on-demand samples with logging intervals from one second to three hours.


Dedicated Help Key

Clear tutorial messages and directions are available on-screen to quickly and easily guide you through setup and calibration.

Quick Connect Probe

Superior Field Usability

An IP67-rated, waterproof meter means that bad weather, splashes, and dust won't stop you from taking important measurements. The HI98199 is built to withstand immersion in water of 1m for up to 30 minutes. A large display and back light feature ensure that all of your important information is easily visible, no matter the amount of light.


Universal Port

The ultra-versatile USB-C port integrates seamless transfer of data. There is no need for software- simply connect a USB-C and send your data as a .csv to a memory stick, computer, or android device.


Quick Connect Digital Probe Auto-sensor Recognition

The Quick Connect fitting is designed for quick and easy installation of the probes. A watertight connection without threads make attaching and removing the probe simple. The probe and meter automatically recognize the sensors making it easy to change electrodes. Each probe transmits readings digitally to the meter, where data points can be displayed and logged.

Versatility when you need it.

Hanna’s pH probe is included with the HI98199 and the EC and DO probes can be ordered separately.

pH Electrode

pH Probe - HI829113 (included)

Up to a three-point calibration with five standard buffers and one custom buffer available
pH in mV option is useful for diagnostics
GLP data
Automatically temperature compensated readings
Conductivity (EC/TDS) Probe

EC Probe - HI763093 (optional)

Single-point calibration from six standards
Automatic Temperature Compensation
Salinity readings
Practical Salinity Scale (PSU) based on conductivity calibration
Dissolved Oxygen Probe

DO Probe - HI764103 (optional)

Display units in % saturation or ppm (mg/L)
Salinity compensation for saline waters
Built-in barometer
Automatic Temperature Compensation
Automatic polarization of probe at startup
Ready-to-use HDPE pre-tensioned membrane caps


pH Range 0.00 to 14.00 pH
pH Resolution 0.01 pH
pH Accuracy (@25ºC/77ºF) ±0.02 pH
pH Calibration automatic one, two, or three points of five standard buffers (pH 4.01, 6.86, 7.01, 9.18, 10.01) or one custom buffer


mV Range ±600.0 mV
mV Resolution 0.1 mV
mV Accuracy (@25ºC/77ºF) ±0.5 mV


EC Range 0 to 200 mS/cm
EC Resolution manual: 1 µS/cm; 0.001 mS/cm; 0.01 mS/cm; 0.1 mS/cm; 1 mS/cm
automatic: 1 µS/cm from 0 to 9999 µS/cm; 0.01 mS/cm from 10.00 to 99.99 mS/cm; 0.1 mS/cm from 100.0 to 200.0 mS/cm
automatic mS/cm: 0.001 mS/cm from 0.000 to 9.999 mS/ cm; 0.01 mS/cm from
EC Accuracy ±1.5% of reading or ±2 µS/cm whichever is greater
EC Calibration automatic single-point, with six standard solutions (84 µS/ cm, 1413 µS/cm, 5.00 mS/cm, 12.88 mS/cm, 80.0 mS/cm, 111.8 mS/cm) or custom point
TDS Range 0.0 to 200.0 ppt (g/L) (the maximum value depends on the TDS factor)
TDS Resolution manual: 1 ppm (mg/L); 0.001 ppt (g/L); 0.01 ppt (g/L); 0.1 ppt (g/L); 1 ppt (g/L)
automatic: 1 ppm (mg/L) from 0 to 9999 ppm (mg/L); 0.01 ppt (g/L) from 10.00 to 99.99 ppt (g/L); 0.1 ppt (g/L) from 100.0 to 200.0 ppt (g/L)
automatic ppt (g/L): 0.001
TDS Accuracy ±1% of reading or ±1 ppm (mg/L) whichever is greater
TDS Calibration based on conductivity calibration

Salinity, Seawater

Salinity (Seawater Sigma) Range 0.0 to 50.0 σt , σ0, σ15
Salinity (Seawater Sigma) Resolution 0.1 σt , σ0, σ15
Salinity (Seawater Sigma) Accuracy ±1 σt , σ0, σ15
Salinity (Seawater Sigma) Calibration based on conductivity calibration


Resistivity Range 0 to 999999 Ω•cm; 0 to 1000.0 kΩ•cm; 0 to 1.0000 MΩ•cm
Resistivity Resolution 1 Ω•cm; 0.1 kΩ•cm; 0.0001 MΩ•cm
Resistivity Accuracy based on conductivity calibration

Oxygen, Dissolved

Oxygen, Dissolved Range 0.0 to 500.0%; 0.00 to 50.00 ppm (mg/L)
Oxygen, Dissolved Resolution 0.1%; 0.01 ppm (mg/L)
Oxygen, Dissolved Accuracy 0.0 to 300.0%: ±1.5% of reading or ±1.0% whichever is greater
300.0 to 500.0%: ±3% of reading
0.00 to 30.00 ppm (mg/L): ±1.5% of reading or ±0.10 ppm (mg/L), whichever is greater
30.00 ppm (mg/L) to 50.00 ppm (mg/L): ±3% of reading
Oxygen, Dissolved Calibration automatic one or two points at 0, 100% or one custom point

Meter Temperature

Temperature Range -5.00 to 55.00 °C; 23.00 to 131.00 °F; 268.15 to 328.15 K
Temperature Resolution 0.01 °C; 0.01 °F; 0.01 K
Temperature Accuracy ±0.15 °C; ±0.27 °F; ±0.15 K

General Meter

pH Electrode HI829113 pH Probe
EC/TDS Probe HI763093 EC Probe
DO Probe HI764103 DO Probe
Logging Type Continuous logging or log-on-demand; Interval: one second to three hours
Logging Memory 45000 records
Connectivity via USB (with Hanna PC software)
Battery Type / Life 1.5V AA batteries (4) / approximately 400 hours of continuous use without backlight (50 hours with backlight)
Environment 0 to 50 °C (32 to 122 °F); RH 100% IP67
Dimensions 185.0 x 93.0 x 35.2 mm (7.3 x 3.6 x 1.4”)
Weight 400 g (14.2 oz.)
Ordering Information Each HI98199 is delivered in a rugged carrying case and is supplied with: HI829113 Digital pH probe with 4 m (13’) cable, HI700601 General purpose cleaning solution, HI7004 pH 4.01 buffer solution, HI7007 pH 7.01 buffer solution, HI920015 Micro USB cable 1.8 m (6’), 100 mL Beaker (2 pcs.), 1.5V AA batteries (4 pcs.), instruction manual, Instrument quality certificate, Probe quality certificate.