Salinity Refractometer - 0 to 28% Fertilizer You pour tap water into

You pour tap water into the top reservoir and then the water passes through the cartridge to the storage tank below

The Max-Fan® Pro Series is even more efficient and stronger than the original Max-Fan® design

solid gasket design with Viton seals

Cost-Effective: Creates an indoor growth environment with minimal stress and uncertainty about equipment setup

Salinity Refractometer - 0 to 28% Fertilizer You pour tap water intoMeasures salt content in sea water, pickling brines and other applications. While the scale is calibrated for sodium chloride, it can also be used for calcium chloride, barium cobalt, magnesium, cesium, potassium, sodium chloride, cupric sulfate, potassium iodide, citric acid, acetic acid and (vinegar). Place a drop or two of a sample on the prism and read the results. Sper Scientific portable refractometers work in ambient light with no battery or