Sub clause (q) of the same clause explains 'prescribed standard of fertilizer ' as under: "Prescribed standard" means (i) in relation to fertiliser included in Column 1 of Part A of 763 Schedule 1, the standard set out in the corresponding entry in Column 2, subject to the limits of permissible variation as specified in Part B of that Schedule; and (ii)in relation to a mixture of fertilisers, the standard set out in respect of that mixture under sub clause (1) of Clause 13 by the Central Government, subject to the limits of permissible variation as specified in Part B of Schedule 1; (iii)in relation to a [mixture of NPK fertilisers, mixture of micronutrient fertilisers and combination thereof], the standard set out in respect of that mixture under sub clause (2) of Clause 13 by the State Government, subject to limits of permissible variation as specified in Part B of Schedule 1.;" And standard specified of single super phosphate (SSP) sulphur manufactured by the respondents is described in Schedule I of the Order as under: "Single Super Phosphate Granulated) (i) Moisture, per cent by weight, maximum (ii) free phosphoric acid (as P 2 0 5) per cent by weight, maximum (iii) Water soluble phosphates (as P 205 per cent by weight , maximum (iv) Particle size Notless than 90 per cent of the material shall pass through 4 nun IS sieve and shall be retained on 1 mm IS sieve.