Measuring TDS in Water - Total Dissolved Solids

Total dissolved solids (TDS) is a measure of the combined inorganic and organic substances dissolved in water. It is directly related to the electrical conductivity of water and as such can be used as an indication of change. Only relevant in freshwater systems as salinity will dramatically increase the conductivity and therefore apparent TDS.

Orion VERSA STAR Conductivity Benchtop Meter

Orion VERSA STAR Conductivity Benchtop Meter

The Orion™ VERSA STAR™ Conductivity Benchtop Meter is an advanced electrochemistry meter which comes with a conductivity module, or as a complete kit. Measuring conductivity, TDS, salinity or resistivity with temperature has never been simpler.

Orion VERSA STAR Conductivity Module

Orion VERSA STAR Conductivity Module

Add conductivity, TDS, salinity or resistivity measurement capabilities to your meter with the Thermo Scientific™ Orion™ VERSA STAR™ conductivity module. This particular module available from RS Hydro offers a choice of settings dependent on the application.

A212 Conductivity Benchtop Meter

A212 Conductivity Benchtop Meter

If you need to gather information quickly and easily the Thermo Scientific™ Orion Star™ A212 Conductivity Benchtop Meter is the perfect option. Renowned for its durability and dependability it is ideal for every sample, every day.

TDS 6+

TDS 6+

The TDS6+ is a no-frills handheld meter which is ideal for basic water testing needs.

CONSEN91B Conductivity Electrode

CONSEN91B Conductivity Electrode

Conductivity electrode with stainless steel rings, PBT and ultem body.

Alpha TDS 190 Total Dissolved Solids Controller / Transmitter

Alpha TDS 190 Total Dissolved Solids Controller / Transmitter

RS Hydro are proud distributors of the Alpha TDS 190 which provides faster and convenient control for the user.

Alpha TDS 200 Total Dissolved Solids Controller/Transmitter

Alpha TDS 200 Total Dissolved Solids Controller/Transmitter

The Alpha TDS 200 is a straightforward and user friendly meter delivering accuracy a varying temperatures in a range of applications.

A112 Conductivity Benchtop Meter

A112 Conductivity Benchtop Meter

The Orion Star™ A112 Conductivity Benchtop Meter is the easy to use Conductivity meter featuring easy to use layout for all simple conductivity measurements.

Datastick Conductivity Meter

Datastick Conductivity Meter

The DataStick with conductivity sensor head is able to yield highly accurate 24-bit conductivity data. Interactive communication with a host computer or display interface is possible via a wide array of connectivity protocols, including Modbus RTU, DeviceNet, Profibus, USB, CANopen and Ethernet.

EcoTestr Salt

EcoTestr Salt

Measuring Salinity in a economical and quick way has never been simpler by using the EcoTestr Salt pocket tester. Delivering reliability even in harsh field conditions and a wide range of applications. This product is covered by a 1 year meter warranty.

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