DEAS 1163:2023  
ii © EAC  2023  – All rights reserved  
 DRAFT EAST AFRICAN STANDARD  
Fertilizer – Single Super Phosphate — Specification  
EAST AFRICAN COMMUNITY  
 
 
 
 
 
 
 
 
 
 
  DEAS 1163:2023  
© EAC 2023  – All rights reserved  iii 
 Copyright notice  
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Violators may be persecuted  DEAS 1163:2023  
iv © EAC  2023  – All rights reserved  
 Foreword  
Development of the Eas t African Standards has been necessitated by the need for harmonizing requirements 
governing quality of products and services in the East African Community. It is envisaged that through 
harmonized standardization, trade barriers that are encountered when g oods and services are exchanged 
within the Community will be removed.  
In order to achieve this objective, the Community established an East African Standards Committee mandated 
to develop and issue East African Standards.   
The Committee is composed of rep resentatives of the National Standards Bodies in Partner States, together 
with the representatives from the private sectors and consumer organizations. Draft East African Standards 
are circulated to stakeholders through the National Standards Bodies in the  Partner States. The comments 
received are discussed and incorporated before finalization of standards, in accordance with the procedures 
of the Community.  
East African Standards are subject to review, to keep pace with technological advances. Users of the  East 
African Standards are therefore expected to ensure that they always have the latest versions of the standards 
they are implementing .  
The committee responsible for this document is Technical Committee EASC/TC 020, Agriculture and 
agrochemicals.  
 DRAFT EAST AFRICAN STANDARD  DEAS 1163 :2023  
 
© EAC 2023  – All rights reserved  1 
 Fertilizer – Single Super Phosphate — Specification  
1 Scope  
This draft East African  Standard prescribes the requirements, methods of sampling and test of Single Super 
Phosphate fertilizer in powder and granular forms.  
2 Normative references  
The following refe renced documents are indispensable for the application of this document. For dated 
references, only the edition cited applies. For undated references, the latest edition of the referenced 
document (including any amendments) applies.  
ISO 8157, Fertilizer – Terminology  
EAS 913, Fertilizer – Methods of sampling  
WD TC020 -05-2023 , Fertilizer – Code of practice for handling and storage  
AOAC 965.08, Water (free) in fertilizers — Vacuum -desiccation ISO 17318, Fertilizer – Methods for 
determination of heavy metal  contaminants  
ISO 8397, Solid fertilizers and soil conditioners – Test sieving  
ISO 15959, Fertilizers — Determination of extracted phosphorus  
ISO 5316, Fertilizers  – Extraction of water -soluble phosphate  
ISO 6598, Fertilizers - Determination of phosphorous co ntent - Quinolinephosphomolybdate - Gravimetric 
method  
AOAC 980.02 -1985, Sulfur in fertilizers. Gravimetric method  
AOAC2006.03 , Arsenic,  Cadmium,  Cobalt,  Chromium,  Lead,  Molybdenum,  Nickel,  and selenium in fertilizers  
— Microwave digestion and inductively co upled plasma -optical emission spectrometry  
ISO 14820 -1, Fertilizers and liming materials - Sampling and sample preparation - Part 1: Sampling  
 ISO 148 -2, Fertilizers and liming materials - Sampling and sample preparation - Part 2: Sample preparation  
ISO 7409, Fertilizers  -Marking - Presentation and declarations  
 
3 Terms and definitions  
For the purpose of this East African  standard, terms and definitions given in ISO 8157  shall apply  
  
2 © EAC  2023  – All rights reserved  
 4 Requirements  
4.1 General requirements  
4.1.1  Physical requirements  
 
The fertil izer material shall be   free from foreign matter and shall not form hard cake on storage.  The colour of 
Single Super Phosphate fertilizer shall be uniform.  
 
 
4.1.2  Particle size  
 
Single Super phosphate fertilizer in granular form not less than 90% of t he materi al shall pass through 5  mm 
IS sieve and shall be retained on 1 mm IS sieve. Not more than 5% shall be below 1 mm . Tests shall be 
done according to ISO 8397 . 
 
 
4.2 Specific requirements  
4.2.1 Single Super Phosphate fertilizer shall comply with the requireme nts prescribed in Table 1.  
 
Table 1 – Requirements for Single Super Phosphate fertilizer   
  
 
Characteristics  
 Single Super Phosphate 
(Powdered) -fertilizer  Single Super Phosphate 
(granulated) -fertilizer   
Test method  
Available  phosphate (as 
P2O5) 
 % by mass , minimum             16.5  16.5 ISO 6598  
 
Water soluble 
phosphate  
 (as P 2O5) % by mass, 
minimum  
           14.0   14.0 ISO 5316  
Free phosphoric acid 
(as P 2O5) % by mass, 
maximum            4.0 4.0 ISO 15959  
Sulphur content (as S)  
 % by mass, minimum             11.0 11.0  
AOAC 980.02  
 
 
Moisture content, %  
by mass, maximum  
 
  
               11   
 5  
AOAC 965.08  
 
 
 
  
© EAC 2023  – All rights reserved  3 
 5 Contaminants  
Heavy metal contamination in Single Super Phosphate fertilizer shall not exceed the limits given in table 2 
when determined by the methods prescribed  therein .  
Table 2 – Requirements for heavy metal contaminants  
Element                           Requirement  
 Test Method  
Arsenic , mg/kg, max                                       40  ISO 17318  
Cadmium , mg/kg, max                                        45 ISO 17318  
Mercury , mg/kg, max                                       0.1   ISO 17318  
Selenium , mg/kg, max                                       1 AOAC 2006.03  
Lead , mg/kg, max                                       30 ISO 17318  
Chrom ium, mg/kg, max                                       500 
 ISO 17318  
Nickel, mg/kg, max                                                                          120 AOAC 2006.03  
 
6 Sampling  
Sampling and sample preparation of single super phosphate  fertilizers shall be carried out as prescribed in 
ISO 14820 -1 and ISO 148 20-2 respectively . 
 
7    Packaging  
The fertilizer shall be packaged in materials that are clean and non -defective that protect the product from 
physical, chemical and moisture contamination  and withstand multiple stages of handling (transportation and 
storage).  
 
 
 
8    Labelling  
The fertilizer package  shall be legibly and indelibly marked in accordance with ISO 7409 in either English  or 
any other official language.   
9   Storage  
Single Super Phosphate  fertilizers shall be stored, handled and transported as prescribed in DEAS 1166 :2023  
 
 
 
 
 
 
  
4 © EAC  2023  – All rights reserved  
 Bibliography  
 India control order 1985 as amended on 2003.  
 TZS 1168, Fertilizer – Single Super Phosphate – SpecificationWD TC020 -02-2023    
 
© EA C 2023  – All rights reserved  
  
  