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INSTRUCTION MANUAL

HI98318

Waterproof EC/TDS Tester

Liquid Crystal 
Display

CAL button

Operation

Thank You

Thank you for choosing a Hanna Instruments product. Please read 

this instruction manual carefully before using the instrument. 
For more information about Hanna and our products,

visit www.hannainst.com or e-mail us at [email protected].
For technical support, contact your local Hanna office or e-mail us 

at [email protected]
Find your local Hanna office on www.hannainst.com

Preliminary Examination

Remove the meter from the packing material and examine it carefully to make sure 

that no damage has occurred during shipment. If noticeable damage is evident, contact 

your local Hanna office.

Each meter is supplied with:

• CR2032 battery (1 pc.)

• Storage / Protection sleeve

• Instruction manual

• Quality Certificate

Note: Save all packing material until you are sure that the instrument functions 
correctly. All defective items must be returned in the original packaging with the 
supplied accessories.

Preparation

The probe is shipped dry. Before using the electrode, remove the protective cap. Then 

follow the calibration procedure.

• Turn the tester on by pressing ON/OFF button.
• Remove the protective cap and immerse the tip of the probe in the sample to 

be tested.

• Stir gently and wait for a stability tag to disappear.
• The electrode automatically compensates for temperature variations.
• The reading on display is directly expressed in: mS/cm or ppm.
• For best results, recalibrate periodically.
• After use rinse the probe with water.
• Always replace the protective cap after each use.

Specifications

TDS Conversion factor 

(CF)*

0.5 (500 ppm) or 

0.7 (700 ppm)

Calibration 

Solutions

HI50036

                            

HI70031

(Quick Cal)                         (1.41 mS/cm)

Calibration

automatic,single point (1.41 mS/cm)

Quick calibration

one point calibration using Quick Cal pH and EC

one point calibration solution 

HI50036

Temperature 

Compensation

automatic, 0.0 to 50.0 ºC (32.0 to 122.0 ºF)

Battery type 

CR2032 Li-Ion 3V (1 pc.)

Battery life

approximately 250 hours of continuous use

Environment

0 to 50 ºC (32 to 122 ºF);

RH 100% max

Weight
(without battery)

68 g (2.4 oz.)

ON/OFF button

Temperature 
Sensor (inside)

EC Probe

Range

EC/TDS

0.00 to 6.00 mS/cm

0 to 3000 ppm (0.5)

0 to 4000 ppm (0.7)

0.0 to 50.0 °C (32.0 to 122.0 °F)

Resolution

EC/TDS

0.01 mS/cm

10 ppm (0.5)

10 ppm (0.7)

0.1 °C (0.1 °F)

Accuracy 

(@25 °C/77 °F)

EC/TDS

±2% F.S.
±0.5 °C (±1.0 °F)

All rights are reserved. Reproduction in whole or in part is prohibited 
without the written consent of the copyright owner.

Hanna  Instruments  reserves  the  right  to  modify  the  design, 
construction, or appearance of its products without advance notice.

*1000 µS/cm =500 ppm with 0.5 CF

• Quick Cal pH and EC one point  calibration solution sachet (4 pcs.)

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