Determination of particle size by Sieve analysis

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BACKGROUND

Particle that are placed on sieve set have uniform size of pore.when the sieve set is shaken normally the smaller particle are passed through the screen and higher particle are retained.1-3

Aim:-To determine particle size distribution by sieving method.

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REQUIREMENTS

Apparatus: Sieve set,

       Mannual sieve shaker.

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PROCEDURE

The sieve are arranged in descending order of their pore size. Weighed amount of sample was placed at the top of the sieve shaker. Now the sieve shaker was started manually. The powder material retained in various sieve was collected and weighed .A plot was constructed taking particle size on x-axis and % weighed retain on y-axis.

Result interpitation

According to British pharmacopeia powder are classified as follows

SIEVE NUMBER GRADE OF POWDER
10 COURSE
20 MODULLARY COURSE
40 MODULARY FINE
80 FINE
120 VERY FINE

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CONCLUSION

From the above experiment we concluded that the given sample of calcium carbonet, talc, magnesium sterate, lactose was successfully separated and distributed.

SIEVE NO

WEIGHT RETAINED

%WEIGHT RETAINED

  1
  2
  3
  4
  5

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REFERENCES

  1. More HN, Hajare AA. Practical Physical Pharmacy. Career Publications. 2010: 126-128.
  2. Gaud RS, Gupta GD. Practical Physical Pharmacy. CBS Publisher and Distributors. 2009: 47-48.
  3. Mohanta GP. Physical Pharmacy Practical Text, Pharma Book Syndicate. 2006: 50-51.