Sieving Purpose

(Sajjad Ahmad) #1

What is sieve no?
What is purpose of sieving?

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(vijay kumar) #2

When we taken sieves make 4 inches width and length. Count it the how many lines are there within the 4 inches that’s is the sieve number

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(vijay kumar) #3

Purpose means it’s used for particles size checking, according to the sieve size… It’s shows the particular particles size.example mesh number 20,30,40,80,100. When Increased the count decrease the particles size distribution

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(Md. Saifullah Khan) #4

Is it 4 inch or 1 inch?

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(Sajjad Ahmad) #5

1 inch

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(Sajjad Ahmad) #6

Number of holes per linear inch is called sieve no.

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(Sajjad Ahmad) #7

Purpose
For size reduction
uniform size(so uniform mixing)
improve dissolution.
Remove foreign particles( if any)

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(Md. Saifullah Khan) #8

when & how should we decide to sieve?

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(Sajjad Ahmad) #9

before wet mixing
after drying.
depending upon nature of material and tablet size

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(Md. Saifullah Khan) #10

Can you explain please?

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(Sajjad Ahmad) #11

b4 granulation,materials req to be sieved if have lumps,flufy nature or to ensure the removal of foreign particles if any.
glidants and lubricants are sieved to increase surface area for better functioning.
After drying to facilitate die filling acc to tab wt.

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