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Seatest Hydrometer. A popular needle type hydrometer.NEW STYLE !!!(not as picture but similar) Price:£12.99
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Lf 2001 Conductivity Controller. The salt content of water can be determined using the electrical conductivity. A special feature of the Conductivity monitor and controller LF 2001 C is the broad measuring and control range, that is divided into 2 ranges: From 0 - 2.000 µS, the unit is used for monitoring desalinated water and freshwater, in the range 0 - 200 mS for brackish and salt water. Thus the unit can be used for the control of reverse osmosis units and breeding tanks with soft water and for the control of the salt content in marine aquariums. The unit is supplied with a directly connected, seawater resistant graphite electrode.Conductivity monitor and controller 2001requires schuko plug Price:£230.00
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