Tablet hardness testers generally work by applying pressure to the tablet using a set of jaws or a similar mechanism. The force required to break the tablet is measured and recorded. The result is typically expressed in terms of kg (kilograms) or N (Newtons), indicating the amount of force needed to fracture the tablet.
The testing process involves:
Loading the Tablet: The tablet is placed in the tester between two parallel jaws or clamps.
Application of Pressure: The machine applies a gradually increasing force on the tablet.
Fracture Point: The tester measures the force at which the tablet breaks or cracks, recording the value of the applied force.
Readout: The tester displays the result as the tablet’s hardness value.