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TDS (Total Dissolved Solids)


Total Dissolved Solids is a quantitative measure of the dissolved material present in water.

Total Dissolved Solids (TDS) quantification is derived from a conductivity measurement and can be expressed in a number of ways, often as an equivalent concentration of dissolved sodium chloride (swimming pool industry) or sodium sulphate/ calcium carbonate (industrial water treatment). An increase in TDS is indicative of decreasing water purity. This fact is useful in numerous industrial, sanitation, purification and control applications, as TDS measurement provides useful information as to the behaviour or scaling/deposition/foaming tendancies of water.

TDS Meters

TDS measurement can also be performed using hand-held electronic TDS meters . The Kittiwake range consists of TDS pocket meters, EcoScan handheld units and more sophisticated palm top instruments, where accurate control and monitoring of TDS is required.


The table below gives a chart of recommended tests.
R = Recommended X = Suitable for use


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Total Dissolved Solids (TDS)
Test Meter
Boiler Treatment
R
Cooling Towers & Systems
R
Waste Water & Sewage
R
Potable Water
R
Agriculture & Hydroponics
R
Sanitisation
R
Water Purification & Softening
R
Aquaculture
R

Product Table
Code
Product
Range
No. of Tests
No. reagents
FG-K27379-KW ECON 7200 pH/Cond/TDS/°C/Salinity Test Meter -2 -16 pH / -1000-1000 mV / 0-19.99 mS EC / 0-9.99 ppt TDS / 0-90 °C / 0-9.99 ppt salt - 1 unit
FG-K27378-KW ECON 7021 Pocket Cond/TDS/ °C/Salinity Meter EC 0-19.99 mS, TDS 0-9.99 ppt, °C 0-90, Salt 0-9.99 ppt - 1 Unit
AS-K20018-KW Standard TDS (Conductivity) Solution 1413 µS 100
FG-K27887-KW TDS5031 Pocket TDS Meter 10 - 990 ppm - 1 Unit
FG-K26763-KW EcoScan TDS 6 meter and sensor 0 to 9.99, 99.9, 999 ppm; 9.99, 99.9 ppt, Max. 199.9 ppt (depending on factor setting) 0 to 100 °C - 1 Unit
FG-K26762-KW EcoScan TDS 6 Test kit 0 to 9.99, 99.9, 999 ppm; 9.99, 99.9 ppt, Max. 199.9 ppt (depending on factor setting) 0 to 100 °C - As above, but includes case, buffers and sensor