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Hanna Instruments HI 99301N Waterproof EC/TDS/Temperature Meter, with Amperometric Technology, High Range

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Specifications for this item
Number of Items
Measurement Type
pH , Electrical Conductivity , Total Dissolved Solids (TDS) , Temperature
Part Number
Item Weight
50 pounds
Brand Name
Hanna Instruments
Style Name

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Key Features

  • Slim, waterproof, hand-held meter with probe measures high-range conductivity, total dissolved solids (TDS), and temperature for applications such as water conditioning, fish farming, agriculture, and water treatment
  • Large LCD screen displays parameter being measured, temperature, and calibration instructions
  • Meter offers single point, automatic calibration with Automatic Temperature Compensation (ATC)
  • Multiparameter probe has a built-in temperature sensor, DIN connector, and 1-meter/3.3-foot cable
  • Accessories include carrying case, three 1.5V AAA batteries, and instructions

Package Details

Shipping Weight: 3.25 pounds
Package Size: 15.2 x 12.1 x 4.1 inches

Product Description

The Hanna Instruments HI 99301N waterproof portable meter with multiparameter probe displays high-range conductivity and total dissolved solids (TDS) on a large LCD screen that shows the primary reading, temperature, and calibration guides for applications such as water conditioning, fish farming, agriculture, and water treatment. The meter provides single point, automatic calibration with Automatic Temperature Compensation (ATC). On-screen icons indicate meter status. Tutorial messages guide the user through meter operation and calibration steps. Percentage of remaining battery charge is displayed at meter start-up, and a battery icon appears on the display when only a few hours working time are remaining.

The HI 76306 conductivity and TDS probe has a built-in temperature sensor for simultaneous conductivity and temperature readings. The housing of this meter is rated to IP 67 level of protection against dust and short periods of immersion in water. It has a DIN (Deutsches Institut für Normung) connector and 1-meter/3.3-foot cable that attaches at the bottom of the meter to stay out of the way. The meter comes with a carrying case, three 1.5V AAA batteries, and instructions.


Conductivity range0 to 20.00mS/cm
Conductivity accuracy+ or – 2% (full scale)
TDS range0 to 10.00ppt (g/L)
TDS accuracy+ or – 2% (full scale)
Temperature range0 to 60 degrees C/32 to 140 degrees F
Temperature accuracy+ or – 0.5 degree C/1 degree F
Probe (included)HI 76306
Battery type, life(3) 1.5V AAA, approximately 500 hours
Dimensions152 x 58 x 30mm/6.0 x 2.3 x 1.2 inches (H x W x D)

H is height, the vertical distance from lowest to highest point; W is width, the horizontal distance from left to right; D is depth, the horizontal distance from front to back.

A multiparameter meter is a benchtop or handheld device that can take multiple readings on a single sample. It measures parameters such as the pH level (acidity or alkalinity of a substance), conductivity (the amount of salts or other compounds present in water), dissolved oxygen (DO, the amount of oxygen in a liquid), temperature, total dissolved solids (TDS, anything present in water other than the pure water molecule and suspended solids), salinity, resistivity, and oxidation reduction potential (ORP). Applications for multiparameter meters include water testing, pharmaceuticals, agriculture, winemaking, water-treatment plants, and acquaculture. Devices with a benchtop body are often used for indoor laboratory use or in a manufacturing setting; handheld, portable devices are typically used for fieldwork. Sensors are used with a meter to measure the parameters of a substance.

Hanna Instruments manufactures analytical instrumentation and supplies, including pH meters, electrodes, chemical reagents, and buffer solutions. The company, founded in 1978 and headquartered in Woonsocket, RI, meets International Organization for Standardization (ISO) 9001 standards.

What’s in the Box?
  • HI 99301-N portable EC/TDS/Temperature meter
  • HI 76306 multiparameter probe with DIN connector and 1 m/3.3ft. cable
  • Carrying case
  • (4) 1.5V AAA alkaline batteries
  • Instructions

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