W8002090 | Hand-held conductivity, salinity and TDS meter (CON90)

Key Features

  • Large LCD with multiple parameter display
  • Auto-lock and auto-end point reading
  • Multi-point calibration
  • Automatic range switching
  • Compatible with probes with different cell constants
  • Adjustable TDS factor
  • Data memory with real-time clock and date
  • PC link ready (requires optional USB cable)
  • Uses standard AAA batteries or can be charged from a PC when connected by a USB cable


The CON90 is a portable, highly accurate and full-featured meter that can be used for many applications requiring the measurement of conductivity, total dissolved solids (TDS) and salinity. The CON90 has a large LCD that can display conductivity, TDS or salinity simultaneously with temperature and time. Readings can be displayed in µSiemens, mSiemens, parts per million (ppm) or parts per trillion (ppt).

The CON90 features an Auto Lock Measurement function that can sense when a stable endpoint is reached and then locks that measurement to ensure accuracy and consistency. Accuracy is also assured through multi-point calibration that allows the CON90 to be calibrated at up to five different points.

Other key features include a system that automatically switches to the next higher range, the ability to use probes of different cell constants (0.1, 1.0 and 10.0) and an adjustable TDS factor (0.4 to 1.0) to increase accuracy.

The CON90 is able to save up to 99 data points simultaneously with date and time. This data can be downloaded by USB cable to a PC and viewed with an optional software package (please see below).

Purchasing Information

The following items are included in the purchase of the CON90:

  • CON90 hand-held conductivity meter
  • Plastic conductivity probe (K1) with PT1000 temperature sensor with 1 meter cable (PC4021)
  • 1413 uS standard conductivity solution, 90 mL (SC1413N)
  • 12.88 mS standard conductivity solution, 90 mL (SC1288N)
  • Hard carrying case
  • Operating manual

Optional accessories and replacement items for the CON90

Part Number
Item Description
PC Link USB cable & software
74 uS standard conductivity solution, 90 mL
1413 uS standard conductivity solution, 90 mL
12.88 mS standard conductivity solution, 90 mL


Model number
Measuring range
0~19.99 mS/cm (Auto Range) | 0~100 parts per trillion (ppt) | 0~120ºC
0.01/ 0.1/ 1 μS | 0.01/ 0.1 mS | 0.1 parts per trillion (ppt) | 0.1ºC
±1% full scale | ±0.5ºC with class A PT1000 thermistor
5 points with 1 point on each measurement range
Battery type
4 x AAA batteries
TDS adjustment range
0.4 to 1.0
Cell constant options
0.1, 1.0 and 10

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About Us

Advance Scientific Products Pty Ltd is based in Queensland and is focused on delivering high-quality products and service to our customers in the life, chemical and analytical sciences across Australia.

The company was established in 2013 by experienced instrumentation specialists to provide full distribution and customer support capability to manufacturers seeking to expand their activities in Australia without having to create their own sales and marketing infrastructure.


PO Box 746
Moffat Beach, QLD, 4551, Australia