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Home Environmental & Temperature Environmental Testers pH Meters & Water Quality Testers

Hanna Instruments EC/TDS/Temperature Meter

Amperometric probe technology
Selectable temperature unit (°C/°F)
Low or High Range models

SKU

HI-99300/1

View All pH Meters & Water Quality Testers

Description Technical Info Reviews

These Hanna meters measure low and high-range conductivity and TDS. The HI-99300 has a bottom-mounted probe, a multi-level LCD, and on-screen tutorial messages. This model is ideal for measuring low-range conductivity in µS/cm and TDS in ppm, making it a great fit for pure and tap water.

The HI-99301 is suitable for high-range conductivity in mS/cm and TDS in ppt, making it well-suited for boiler water and wastewater environments. Each meter has an IP67-rated waterproof casing and comfortably fits into the palm of your hand.

Both meters offer single-point automatic calibration with automatic temperature compensation, user-selectable EC/TDS conversion factors (0.45 to 1.00) and temperature coefficients (0.0 to 2.4%/°C). The display presents all key readings—conductivity or TDS, temperature, and calibration prompts—at a glance. The battery percentage displays at startup, and a low battery warning symbol alerts users when limited runtime remains.

Each model includes a dedicated, clog-resistant, easy-to-clean EC/TDS/temperature probe - HI-76306 for the HI-99300 and HI-763063 for the HI-99301.

Key Features

Amperometric probe technology
Automatic Temperature Compensation
Automatic single-point calibration with calibration indicator
On-screen tutorial messages for calibration and set-up
Replacement probe: HI-763063 with quick connect system
Dedicated EC/TDS temperature probe (HI-763063)
Simultaneous EC/TDS and temperature measurements on a large LCD
Selectable temperature unit (°C/°F)
BEPS (Battery Error Prevention System) alerts for low battery power
Battery percentage display on start-up with low battery indication
Auto-off function
Keystroke confirmation tone
Compact, heavy-duty, and waterproof casing (IP67 rated)

What's Included?

Choice of meter
HI-763063 pH/EC/TDS probe with built-in temperature sensor, DIN connector and 1m cable
HI70031 1413 μS/cm and HI70032 1382 ppm 1 sachet each (HI99300 only)
HI70030 12880 μS/cm and HI70038 6.44 ppt 1 sachet each (HI99301 only)
100mL beaker
Alkaline batteries: 1.5V AAA x 3
Rugged carrying case
Calibration certificate of the meter
Calibration certificate of the probe
Instruction manual

Product Range

Hanna Instruments HI-99300 EC/TDS/Temperature Meter, Low Range
Hanna Instruments HI-99301 EC/TDS/Temperature Meter, High Range

£304.50

£365.40 inc vat

Free Delivery*

Available Models Select An Option

Low Range HI-99300 £304.50 High Range HI-99301 £304.50

304 Reward Points 60 Days Return

Technical Information

Specification

	HI-99300	HI-99301
Range - EC	0 to 3999 µS/cm	0 to 20.00 mS/cm (displays mS)
Range - TDS	0 to 2000 ppm (mg/L)	0.00 to 10.00 ppt
Range - Temperature	-5.0 to 105.0°C
Resolution - EC	1 µS/cm	0.01 mS/cm
Resolution - TDS	1 ppm (mg/L)	0.01 ppt (g/L)
Resolution - Temperature	0.1°C
Accuracy - EC	±2% F.S.
Accuracy - TDS	±2% F.S.
Accuracy - Temperature	±0.5°C
TDS Factor	Adjustable, from 0.45 to 1.00 with 0.01 increments
Calibration	automatic, 1 point at 1382 ppm (CONV 0.5) or at 1500 ppm (CONV 0.7) or at 1413 µS/cm (others)	automatic, 1 point at 6.44 ppt (CONV 0.5) or at 9.02 ppt (CONV 0.7) or at 12.88 mS/cm (others)
Temperature Compensation	Automatic, with b selectable from 0.0 to 2.4 %/ °C with 0.1 increments
Probe	HI 763063, EC/TDS/temperature sensor, with DIN connector, 1 m (3.3') cable (included)
Battery Type / Life	3 x 1.5V AAA / approx. 500 hours of continuous use
Environment	0 to 50°C (32 to 122°F); RH max 100%
Auto-Off	User selectable: after 8 min, 60 min or disabled
Casing Ingress Protection Rating	IP67
Dimensions	154 x 63 x 30 mm
Weight	196g