Page 89 - Practical Technology 2025
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Clinical Pharmacy-Pharm D Level Three 2 Semester 2024/2025 Pharmaceutical Technology (PT 607)
Problem 3
A granule size analysis was carried out on calcium carbonate granules using the
sieve method, the following data were obtained
• Calculate the mean granule diameter
• Draw a cumulative % frequency under and over size
Mean diameter Weight retained
1800 12
1400 14
1100 30
900 15
700 10
450 9
150 8
Solution
Mid-point of Weight
size range retained
Frequency
(n)
1800 12
1400 14
1100 30
900 15
700 10
450 9
150 8
87
