After the hardness measurement, a pneumatic gripping system transports the samples to a transfer point for density determination. Initially, the weight of the sample is determined in the air to calculate density. Subsequently, the gripping system transfers the sample to another station where it is deposited. A cylinder immerses the sample entirely underwater in a container filled with distilled water, and the water level is checked and adjusted if needed for each measurement. The cylinder moves the water bath up at least twice to eliminate air bubbles, and the current water temperature is recorded. The number of weightings in water can be increased to obtain more precise results. The highest wet weight is used to calculate the density.

The gripping system for density determination is designed with a forced ejection feature to prevent samples from sticking to the gripper. Once the density is determined, a separate gripping system picks up and ejects the sample, preventing potential water carryover. This gripping system also has a forced ejector feature to ensure no sample gets stuck.

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