£24.99 £20.83 Ex VAT
The TDS-4 is an ideal pocket sized meter that can be used for any and all applications, typically for testing TDS and salt levels of freshwater aquariums and ponds. It can also be used for testing water filtration and purification systems, such as RO and DI, to know when to changes filters and membranes.
Note: This meter does not read temperature. For this, you would need to look to our TDS-4TM model or go with an alternative meter such as the TDS 3.