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

6. The following data were obtained from particle size analysis for a sample
of powder by use of the microscope, calculate the mean particle diameter.

Number of particles
Size range in micron
in each size range(n)
1-1.5 4

1.5-2 15

2-2.5 20

2.5-3 30

3-3.5 25

3.5-4 12

4-4.5 10

Solution

Size range in

micron

100