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nd
Clinical Pharmacy-Pharm D Level Three 2 Semester 2024/2025 Pharmaceutical Technology (PT 607)

Lab (11): Sieving (Part 2)
Problem 1
Determine mean particle size of the following particles:

Med point of size range Frequency
(n)
3.7 5
3.2 8
2.7 17
2.2 54
1.7 22
1.2 10
0.7 2

Solution

Med point Frequency Percent Cumulative % Cumulative %
of size (n) % over size under size
range

3.7 0 4.32 4.32 95.77
3.2 0 6.79 11.02 89
2.7 17 14.41 25.43 74.6
2.2 54 45.76 71.19 28.8
1.7 22 18.64 89.82 10.17
1.2 10 8.47 98.3 1.7
0.7 2 1.7 100 0

Ʃ= 118

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