Description of content: This Pakistan
Standard (2nd Revision) was adopted by Pakistan Standards Quality
Control Authority on 26-11-2014, after the draft finalized by the
Fertilizers and Allied Product Technical Committee had been approved by the
National Standards Committee for Chemical.
The
Pakistan Standard Specification was first established in 1958 and first
revised in 1975, keeping in view the latest developments made in the
industries; the committee felt it is necessary to further revise, update and
harmonizing the Pakistan Standard with International Standards.
In
the preparation of this standard, assistance has been derived from IS: 826-
1980 (Rev.) and SLS: 620-1987 acknowledged with thanks. A basic requirement
of the material in laid down in this standard, to assist manufactures, users
and testing authority.
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