2.4.3. Hardness. The crushing strength of the tablets was
measured using a Monsanto Hardness Tester (Perfit). Three
tablets from each formulation batch were tested randomly
and the average reading was noted.The hardness ismeasured
in kg/cm2 [11].
2.4.4. Friability. Ten tablets were weighed and placed in a
Roche Friabilator (Veego, India) and the equipment was
rotated at 25 rpm for 4 min. The tablets were taken out, dedusted
and reweighed.The percentage friability of the tablets
was measured as per the following formula [12]
Percentage friability =
Initial weight − Final weight
Initial weight × 100.
(1)
2.4.5. In-Vitro Disintegration Test. The test was carried out on
6 tablets using Digital Tablet Disintegration Tester (Veego,
India). Distilled water at 37∘C ± 2∘C was used as a disintegration
media and the time in second taken for complete
disintegration of the tablet with no palable massremaining in
the apparatus was measured in seconds [13].
2.4.6.Wetting Time. A petridish containing 6mL of distilled
water was taken. A tablet containing a small quantity of
amaranth color was placed on this. Time required for the
upper surface of the tablet to become complete red was noted
[14].
2.4.7. Drug Content Uniformity. Ten tablets (200mg) were
powdered in mortar pestle and the blend equivalent to 5mg
of Cetirizine Hydrochloride was weighed and dissolved in
Journal of Pharmaceutics