Hydrometers and Refractometers
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Fluval Sea Hydrometer
Fluval Sea Hydrometer The Fluval Sea Hydrometer measures salt levels in marine aquariums, The...
Learn More£6.24 -
Kent Marine Hydrometer
Kent Marine Hydrometer, certified Calibrated, the Hydrometer from Kent Marine is easy to read and...
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TetraTec Hydrometer
Tetratec Marine Saltwater Hydrometer. The Tetratec Hydrometer is a quick and easy way to measure the...
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D-D Refractometer
The D-D Refractometer is a simple and robust way of accurately measuring the salinity within your...
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ITC Refractometer (With Led Backlight)
ITC Saltwater Refractometer with LED backlight has an easy to read scale aided by the backlit top...
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Red Sea Seawater Refractometer
An essential bit of kit for any serious marine fish keeper, calibrated for accurate sea water...
Learn More£43.19