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

This compact chlorine meter features push button automatic 3-point calibration

PURPINATOR® won’t burn plants when used as directed

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

Comes with 0

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