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Hydrometers ( Salinity Test)

£14.49 £10.87
Measures Salinity & Specific Gravity Extremely accurate and easy to use swing needle hydrometer.Provides temperature corrected readings in water that...

£41.72 £31.29
TMC
The TMC V2 Refractometer is a great bit of kit, that is tried and trusted. It has the following great features;   Automatic temperature...