HI98188 EC/ Resistivity / TDS / NaCl Meter + PC Interface (USP)
HI98188 EC/ Resistivity / TDS / NaCl Meter + PC Interface (USP)
THB 53,600.00 * Prices plus VAT plus shipping costs
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Product information "HI98188 EC/ Resistivity / TDS / NaCl Meter + PC Interface (USP)"

HI 98188 is a waterproof, portable conductivity meter that has an expanded conductivity range from 0.001 µS/cm to 400 mS/cm, as well as TDS, resistivity and three salinity scales. This meter automatically recognizes the probe type (two or four ring) and allows the user to adjust the nominal cell constant. HI 98188 is also ready to perform all three stages of USP <645> method required for EC measurement of pure and ultrapure water.

Choose from seven memorized standards and obtain up to a five point conductivity calibration. For salinity (% range), HI 7037 standard allows users to make a one point calibration.

EC and TDS measurements are fully customizable and include: cell contant selection between 0.0 and 10.000, selection of linear or  natural water (non-linear) or no (for actual conductivity reading) temperature compensation, configurable temperature compensation coefficient range from 0.00 to 10.00%/ºC, choice of reference temperatures of of 15ºC, 20ºC and 25ºC and a selectable TDS factor between 0.40 and 1.00.

Ten sets of customized measurement parameters can be stored as a user profile and recalled for later use.

Data may be captured by either the log on demand option (400 samples) or by interval logging (from 5 sec to 1 minute). Data can be transferred to a PC using HI 92000 software and HI 920013 USB cable.

A combination of dedicated and soft keys allows quick, intuitive operation in a choice of languages. Comprehensive GLP data is directly accessible by pressing the GLP key. At the touch of a button users can access the contextual help menu to obtain on-screen information and assistance about each feature.

Designed for field use, this instrument can be easily operated with one hand and includes a rugged carrying case. With an extended battery life of up to 100 hours, users are assured long operation. The inductive charger can either be plugged into a standard 230V socket with the adapter included or a 12 Vdc source, such as a car's 12 volt accessory outlet.


  • Autorange from 0.001 µS/cm to 1,000 mS/cm (actual EC)
  • Ready to perform all three stages of USP <645> method required for EC measurement of pure and ultra pure water
  • Linear, natural water, or no temperature compensation
  • Memorize up to ten user profiles
  • Log on demand and autolog; All logged data can be transferred to PC through USB port.
  • GLP features
  • Backlit, graphic display


Order Information:   HI 98188-02 (230V) are supplied with HI 76313 conductivity probe, 100 mL plastic beaker, HI 7031M 1413 mS/cm calibration solution (230 mL), HI 7035 111.8 mS/cm calibration solution, rechargeable batteries, 12 VDC adapter/ charger, instructions and rugged carrying case. HI 98188/10M (230V) is supplied with everything above but includes a HI 76313 probe with 10 m (32.8’) cable in place of the standard cable length.

Product Manuals

  Manual: Download

Specification :

Range EC 0.001 µS/cm to 400 mS/cm (actual conductivity 1000 mS/cm) 0.001 to 9.999 µS/cm; 10.00 to 99.99 µS/cm; 100.0 to 999.9 µS/cm; 1.000 to 9.999 mS/cm; 10.00 to 99.99 mS/cm; 100.0 to 1000.0 mS/cm (actual EC) (autoranging)
  Resistivity 1.0 to 99.9 Ohms; 100 to 999 Ohms; 1.00 to 9.99 KOhms; 10.0 to 99.9 KOhms; 100 to 999 KOhms; 1.00 to 9.99 MOhms; 10.0 to 100.0 MOhms (autoranging)
  TDS 0.00 to 99.99 mg/L (ppm); 100.0 to 999.9 mg/L (ppm); 1.000 to 9.999 g/L (ppt); 10.00 to 99.99 g/L (ppt); 100.0 to 400.0 g/L (ppt) (autoranging)
  NaCl %: 0.0 to 400.0%; seawater scale: 0.00 to 80.00 (ppt); practical salinity: 0.01 to 42.00 (PSU)
  Temperature -20.0 to 120.0°C
Resolution EC 0.001 µS/cm; 0.01 µS/cm; 0.1 µS/cm; 0.001 mS/cm; 0.01 mS/cm; 0.1 mS/cm
  Resistivity 0.1 Ohm; 1 Ohm; 0.01 KOhms; 0.1 KOhms; 1 KOhms; 0.01 MOhms; 0.1 MOhms
  TDS 0.01 mg/L (ppm); 0.1 mg/L (ppm); 0.001 g/L (ppt); 0.01 g/L (ppt); 0.1 g/L (ppt)
  NaCl 0.1%; 0.01
  Temperature 0.1°C
Accuracy @ 25°C EC ±1% of reading (±0.01 µS/cm or 1 digit, whichever is greater)
  Resistivity ±1% of reading (±10 Ohms or 1 digit, whichever is greater)
  TDS ±1% of reading (±0.05 mg/L (ppm) or 1 digit, whichever is greater)
  NaCl ±1% of reading
  Temperature ±0.2°C (excluding probe error)
  -20.0 to 120.0°C
  15°C, 20°C and 25°C
  0.00 to 10.00 %/°C
TDS Factor   0.40 to 1.00
Probe   HI 76313 platinum, four ring conductivity/TDS probe with internal temperature sensor, DIN connector and 4 m (13.1') cable (included)
Logging Log on Demand 400 samples
  Lot Logging 5, 10, 30 sec, 1, 2, 5, 10, 15, 30, 60, 120, 180 min (max 1000 samples)
Memorized Profiles   up to 10
Measurement Modes   autorange, autoend, LOCK and fixed range
PC Connectivity   opto-isolated USB (with HI 92000 software)
Battery Type / Life   1.2V AA rechargeable batteries (4) / approximately 100 hours of continuous use (without backlight); user selectable auto-off: 5, 10, 30, 60 minutes or disabled
Environment   IP67
Dimensions   226.5 x 95 x 52 mm (8.9 x 3.75 x 2”)
Weight   525 g



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