Density Gradient Meter (Density Gradient Tube Method) HP14

Used for high-precision determination of the density of solid polymer materials and rapid comparative interpretation of subtle differences in similar materials. The density gradient column method can measure the density of small and hard samples. For example: flakes, films, small particles, powders, etc. The glass test tube is filled with two easily mixed solutions. The resulting mixed solution has a lower density at the top of the test tube and a higher density at the bottom of the test tube. For a linear ratio change, a precisely calibrated glass float marker of known density is placed inside the gradient column and the glass float is suspended at a point that matches the density of the solution. Place the unknown sample into the gradient column, wait for it to reach equilibrium, record the position of the test sample in the gradient tube relative to the standard float, and calculate the density value of the sample being tested.