The glass test tube is filled with two easily mixed solutions. The resulting mixture has a lower density at the top of the test tube, but a higher density at the bottom of the test tube and varies in a linear ratio. A precisely corrected glass float marker of known density is placed in the gradient column, and the glass float is suspended at a point that matches the density of the solution. The device uses a linear encoder to calibrate the density gradient of the column. By focusing the light on the center of the corrected float with an optical microscope head, the density of the float is collected and the information is input into the microprocessor. A sample of unknown density is placed in a gradient column, waiting for it to reach equilibrium. The linear encoder measures the position of the sample in the gradient tube relative to the standard float, and then displays its density on the LCD.

Application of three-column density gradiometer:

1. Density Measurement of High Molecular Weight Materials

2. Density measurement of fibers (natural and man-made)

3. Density Measurement of Resin Products

Density measurement of quality control products

Characteristics of three-column density gradiometer:

1. Automatically dispensing liquid and automatically displaying density value are convenient and reliable.

2. The accuracy of reading is 0.0001 g/ml, and the range of density column is within 0.05 g/ml.

3. Automatic constant speed fisher, increase the service life of density column

4. Compliance with ISO1183, ASTM D1505-68