Hanna Instruments Worldwide
The Hanna Advantage: A Worldwide Leader in Technology and Innovation 100% Quality  360 Value
Contact Hanna: +1 (800) 426-6287

Portable High Range EC/TDS Meter - HI99301P

Ships within 24 hours (business days)

SKU: HI99301P Categories ,


GST and Shipping charges are extra

The HI99301P is a rugged, portable EC/TDS and temperature meter housed in a case rated for IP67 conditions. It is supplied with a two-ring conductivity probe to allow for high range EC measurements from 0.00 to 20.00 mS/cm and TDS measurements from 0.00 to 10.00 ppt. All readings are adjusted with Automatic Temperature Compensation (ATC) and users are able to adjust the temperature correction coefficient and TDS factor for accurately compensated measurements.

One-point Automatic Calibration

Adjustable TDS factor

Automatic Temperature Compensation

Ships within 24 hours (business days)


  Add to wish list

The portable, waterproof HI99301P EC/TDS and temperature meter is suitable for use in applications as diverse as wastewater treatment, reverse osmosis, and HVAC. It measures high range conductivity in mS/cm and TDS in ppt. The HI76306 EC/TDS probe is a two-ring sensor that resists clogging and is easy to clean. The probe also features a built-in temperature sensor to allow for Automatic Temperature Compensation from 0 to 60°C (32 to 140°F).

The meter easily fits in the palm of your hand and the bottom probe connection ensures the electrode cable doesn’t get in the way. The large, multi-level LCD displays the primary reading, temperature, and calibration guides simultaneously. Symbols and messages on the LCD indicate meter status and guides users through operations.

Features at-a-glance

Two-ring Probe – The HI76306 is a two-ring probe that comes with the HI99301P, offering an accurate solution for high range EC and TDS readings. The probe features a built-in temperature probe to allow for temperature compensated readings.

Two Measurement Modes – HI99301P offers two measurement modes: EC and TDS. Users can easily switch between measurement modes with a simple press of the MODE button. EC measurements range from 0.00 to 20.00 mS/cm; TDS measurements range from 0.00 to 10.00 ppt.

Adjustable TDS Factor – The TDS value in aqueous solutions is directly proportional to conductivity. The ratio between the two parameters depends on the solution being measured. The HI99301P has an adjustable TDS factor from 0.45 to 1.00 with 0.01 intervals, allowing users to choose the conversion factor that is the most appropriate for their particular solution.

Automatic Temperature Compensation – Since temperature has such a dramatic effect on conductivity and TDS readings, having a meter that offers temperature compensated readings is invaluable. The probe of the HI99301P features a built-in temperature sensor that automatically accounts for the effects of temperature in the range of 0 to 60°C (32 to 140°F).

Adjustable Temperature Compensation Coefficient – The temperature compensation coefficient, also known as β, is adjustable from 0.0 to 2.4%/°C with 0.1% intervals; this factor corrects the reading a set percentage % for each degree Celsius change in the sample.

Automatic Calibration –  The HI99301P can be automatically calibrated at one point in a standard EC or TDS solution. A 12.88 mS/cm standard is used for EC calibration, which will automatically calibrate TDS readings. However, if the meter is in TDS mode and set to 0.5 conversion factor, a direct calibration in 6.44 ppt TDS calibration solution can be used.

Battery Error Prevention System (BEPS) – The Battery Error Prevention System detects when the batteries become too weak to ensure reliable measurements.

Instability Indicator – The HI99301P displays a clock tag that will disappear when a reading has achieved stability.

SKU HI99301P
Name Portable High Range EC/TDS Meter – HI99301P
EC Range 0.00 to 20.00 mS/cm
EC Resolution 0.01 mS/cm
EC Accuracy ±2% FS
EC Calibration Automatic, single point at 12.88 mS/cm (CONV 0.5)
TDS Range 0.00 to 10.00 ppt (g/L)
TDS Resolution 0.01 ppt (g/L)
TDS Accuracy ±2% F.S.
TDS Calibration Automatic, single point at 6.44 ppt (CONV 0.5)
EC/TDS Temperature Compensation automatic, 0 to 60°C (32 to 140°F) with β adjustable from 0.0 to 2.4%/°C with 0.1% step
EC to TDS Conversion Factor Selectable from 0.45 to 1.00 (CONV)
Temperature Range 0.0 to 60.0°C / 32.0 to 140.0°F
Temperature Resolution 0.1°C / 0.1°F
Temperature Accuracy ±0.5°C /±1°F
EC/TDS Probe HI76306 with built-in temperature sensor, DIN connector and 1 m cable (included)
Automatic Shut-Off auto-off after 8 minutes of non-use
Battery Type/Life 1.5V AAA (3) / approximately 500 hours of continuous use
Environment 0 to 50°C (32 to 122°F); RH 100%
Dimensions 143 x 80 x 38 mm (5.6 x 3.2 x 1.5’’)
Weight 320 g (11.3 oz)

HI99301p is supplied with HI76306 EC/TDS probe, batteries, instruction manual, and rugged carrying case.


There are no reviews yet.

Be the first to review “Portable High Range EC/TDS Meter – HI99301P”

Your email address will not be published. Required fields are marked *