4 Parameter Electrochemistry Analyzer(pH, CON,DO)

3 parameter Water Analyzer

  1. Conductivity: 0~199.9mS
  2. TDS: 0~99.9ppt
  3. Salinity: 0~100.0ppt
  4. Temperature: 0~120 ºC

Standard Accessories
1. Main instruments
2. Plastic Conductivity probe K1 with pt1000 temperature sensor with 1 meter Cable
3. CAL 1413uS Standard Conductivityr solution 90ml
4. CAL 12.88mS Standard Conductivityr solution 90ml
6. Hard Carrying case
7. Operation manual

Optional Accessories
1. PC Link USB cable & software
2. CAL 74uS Standard Conductivityr solution 90ml
3. CAL 1413uS Standard Conductivityr solution 90ml
4. CAL 12.88mS Standard Conductivityr solution 90ml



Professional Conductivity-TDS-Salinity Meter TR-DO90 is a portable yet highly accurate Conductivity meter. It is used in all industries as well as commercial and educational teaching aids. It has full functionality that matches an expensive bench meter.

The meter comes complete in a hard carrying case with calibration buffer solutions.

Advanced Features:

Large LCD with Multiple Display
Display of Conductivity or TDS or Salinity with temperature and time simultaneously
Able to display reading in µSiemen, mSiemen, ppm, ppt.

Auto-lock Measurement
Meter automatically sense a stabilized endpoint reading
This ensures workers only takes in an accurate reading
all the time and every time.

Multi-point calibration
Meter able to make up to 5 points calibration

Automatic Range
Meter able to automatically switch to the next higher range to enhance the accuracy over the 5 calibrated points.

Cell Constant
Meter can accept probe of different cell constant 0.1, 1.0 and 10.0

TDS Factor
TDS factor can be adjusted to allow higher accuracy of different type of chemical or liquid of known conversion.

Real Time Memory
Able to save records of up to 99 data memory with date and time, enable download to PC.

Online PC link
Able to link to a PC for online display with optional PC kit (sold separately) and download saved data.
Meter uses regular AAA size batteries and tap power source from PC when connected via the USB cable.


Range Conductivity / TDS Salinity Temperature
  0~19.99μS 0~199.9μS 0~1999μS 0~19.99mS 0~199.9mS 0~100.0ppt 0~120 ºC
  0~9.99ppm 0~99.9ppm 0~999ppm 0~9.99ppt 0~99.9ppt
Resolution 0.01

μS / ppm


μS / ppm


μS / ppm


mS / ppt


mS / ppt

0.1ppt 0.1 ºC
Accuracy ±1% Full Scale ±0.5 ºC
Calibration 5 points with 1 point on each range
TDS Factor Adjustable from 0.40 to 1.00
Cell constant Selectable from 0.1 , 1.0 & 10.0
ATC Automatic from 0 – 100 ºC
Memory 99 data with real time clock
Power source 4 x 1.5Volt AAA size battery
Battery Life 40 hrs of continuous use with white back-light on


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