1. Evaluation of tablet dosage form 2) hardness and thickness
Aram I. Ibrahim
University of sulaimani
College of pharmacy
Dep. Of pharmaceutics

2. Content
Introduction
Hardness test
Thickness test
Experimental work

3. Introduction
Tablet hardness is the force necessary to break the tablet diametrically. 

4. Hardness test
To perform hardness test the tablets are located between two anvils and force is applied to the anvils, and the strength required to break the tablet is noted.

5. Hardness test
The force with which the tablet is broken is expressed in kilograms and a hardness of 4Kg is usually good to be the minimum for satisfactory tablets.
Oral tablets have a hardness of 4 to 10kg, but hypodermic and chewable tablets have a  hardness of 3 kg and sustained release tablets have about kg.

6. Thickness
The thickness of individual tablets is measured with micrometer, which gives us information  about the variation between tablets. 
Tablet thickness should be within a ±5% variation of a standard value.

7. Experimental work
Measure the thickness and hardness of 5 tablets and compare them.