Salinity Refractometer - 0 to 28% HPS 5 pounds or 3 cups

5 pounds or 3 cups per square foot

and here's some science to prove it: Water has a thermal conductivity of 0

natural blend of concentrated enzymes is specifically designed to break down dead root matter

LIFE provides the nutrient inputs required in early root development

Salinity Refractometer - 0 to 28% HPS 5 pounds or 3 cupsMeasures 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