The GHL Doser 2.1 Slave needs to be...
High precision hydrometer for determining the specific gravity in aquariums
The MW700 is a portable luxmeter with waterproof probe.
The refractometer is an optical instrument that uses the measurement of the refractive index to determine the salinity of natural and artificial seawater, seawater or brackish intermediates.
Double scale includes density and% by mile Automatic temperature compensation Easy to calibrate Adjustable eyepiece Includes pipette and calibration screwdriver Measuring range: 0-10% Minimum division: 0.10% Accuracy: 0.1%
Easy to read and with high accuracy to 0.001 specific gravity units
Special design to gently introduce water into the bottom to avoid excess bubbles