UGANDA STANDARD  
  DUS 2143  
First  Edition  
2019 -mm-dd 
 
 
 Reference number  
DUS 2143 : 2019 
© UNBS 2019   
  
Tonto  — Specification   
 DUS 21 43: 2019  
ii © UNBS 2019  – All rights reserved  
 Compliance with this standard does not, of itself confer immunity from legal obligations  
A Uganda Standard does not purport to include all necessary provisions of a contract. Users are 
responsible for its correct application  
© UNB S 2019   
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permission from UNBS.  
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Fax: +256 41 4 286 123  
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. DUS 2143 : 2019  
© UNBS 2019  – All rights reserved  iii 
 Foreword  
Uganda National Bureau of Standards (UNBS) is a parastatal under the Ministry of Trade , Industry and 
Cooperatives established under Cap 327 , of the Laws of Uganda , as amended .  UNBS is mandated to co -
ordinate the elaboration of standards and is  
(a) a member of International Organisation for Standardisation (ISO) and  
(b) a contact point for the WHO/FAO Codex Alimentarius Commission on Food Standards, and  
(c) the National Enquiry Point on TBT  Agreement  of the World Trade Organisation (WTO).  
The work of preparing Uganda Standards is carried out through Technical Committees. A Technical 
Committee is established to deliberate on standards in a given field or area and consists of key stakeholders 
including government, academia , consumer groups, private sector and other interested parties.  
Draft Uganda Standards adopted by the Technical Committee are widely circulated to stakeholders and the 
general public for comments. The committee reviews the comments before recommending the  draft standards 
for approval and declaration as Uganda Standards by the National Standards Council.  
The committee responsible for this document is Technical Committee UNBS /TC 2, [Food and Agriculture]  
Subcommittee SC 16, [Water, Drinks and related beverag es]. 
 
 
 UGANDA ST ANDARD  DUS 2143 : 2019  
 
© UNBS 2019  – All rights reserved  1 
 Tonto  (Traditional beer) — Specification  
1 Scope   
This Draft Uganda  Standard specifies requirements and methods of sampling and test for Tonto  
2 Normative references   
The following referenced documents referred to in the text in such a way that so me or all of their content 
constitutes requirements 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.  
US ISO 5523, Liquid fruit and vegetable products — Determination of sulphur dioxide content (Routine 
method)  
US 28,  Code of practice for hygiene in the food and drink manufacturing industry  
US ISO 4832 , Microbiology of food and animal feeding stuffs — Horizontal method for the enum eration of 
coliforms — Colony -count technique  
US ISO 4833 -1, Microbiology of the food chain – Horizontal method for the enumeration of microorganisms – 
Part 1: Colony count at 30 C by the pour plate technique  
US 45 , General standard for food additives  
AOAC  999.10, Official method for lead, cadmium, zinc, copper, and iron in foods Atomic absorption 
Spectrophotometry after microwave Digestion  
US EAS 104 , Alcoholic beverages — Methods of sampling and test  
3 Terms and definitions   
For the purposes of this docum ent, the following terms and definitions apply.  
:  
ISO and IEC maintain terminological databases for use in standardization at the following addresses:  
— ISO Online browsing platform: available at http://www.iso.org/obp  
3.1  
Tonto  
alcoholic beverage obta ined by fermentation of the  mash of bananas or banana  juice and roasted sorghum.   
2 © UNBS  2019  – All rights reserved  
 3.2  
extraneous matter  
includes  inorganic matter such as sand, glass, metal, gravel, dirt, pebbles, stones, lumps of earth, clay and 
mud and organic matter such as chaff , straw, weed seeds , insects or insects fragments, rodent hairs or any 
other foreign matter  
4 Requirements  
4.1 General Requirements . 
Tonto shall  
4.1.1  be free from any harmful ingredients, substances, additives and any other contaminants injurious to 
health or  any extraneous matter;  
4.1.2  be free from artificial colouring matter,  
4.1.3  be free from artificial sweetening agents;  
4.1.4  not contain any added alcohol;  
4.1.5  not show a separation of more than 20% of solid phase; and  
4.1.6  have the characteristic  appearance, taste and aroma of Tonto   
 
4.2  Specific requirements  
Tonto  shall comply with the limits given in Table 1  
Table 1 - Chemical requirements for Tonto  
 
Characteristics   
Requirements  Methods of test  
Alcohol content % v/v  4.0 – 12.5 US EAS 104  
PH 2.5 – 5.0 
Methanol, mg/l max  60 
Soluble solids content, %, m/v ,  3.0 – 6.0 
Specific gravity at 20 °C  0.950 - 1.060 
Total solid, %, m/v.  4.0 - 9.5 
Total acidity as malic  acid, g/100 L, 
max.  2.8 to 11  
Volatile acidity as acetic acid, g/100 
L, ma x. 6.0 
6 Hygiene  
Tonto  shall be manufactured and handled in a hygienic manner in accordance with US EAS 39.  DUS 2143 : 2019  
© UNBS 2019  – All rights reserved  3 
 6.2 Microbiological requirements  
Tonto  shall comply with limits for micro -organisms specified in Table  2 
Table 2: Microbial limits for Tonto  
Organ ism Limit  Test Method  
Coliforms, cfu/ml  Absent  US ISO 4832  
Total plate count, cfu/mL,  2x106 US ISO 4833 -1 
Total plate count, cfu/mL, max  if 
preserved  100 US ISO 4833 -1 
7 Food additives  
Food additives may be used in the production of Tonto  in accordanc e with US 45.  
8 Contaminants  
8.1 Heavy metals  
When tested in accordance with AOAC 999.10, the level of Lead (Pb) shall not exceed 0. 1 mg/kg.  
8.2 Mycotoxins  
Tonto shall comply with those maximum residue limits established by the Codex Alimentarius Commissi on. 
9 Weights and measures  
The vo lume and fill of Tonto  shall comply with the weights and measures regulations of Uganda  or equivalent 
legislation.  
10  Packaging  
10.1  Tonto  shall be packaged in suitable food grade containers.  
10.2  Tonto  for bulk delivery  and storage in containers that shall prevent contamination of the product and 
preserve its safety and quality.  
11 Labelling  
In addition to the requirements of US EAS 38, the following specific labelling requirements shall apply and 
shall be legibly and in delibly marked;  
a) Product name as ‘ Tonto ; 
b) name, physical location and address of manufacturer;  
c) ethyl alcohol content, % by volume ; 
d) the net contents shall be declared by volume in millilitres or litres;   
4 © UNBS  2019  – All rights reserved  
 e) list of ingredients in descending order of proportion by  mass;  
f) date of manufacture;  
g) batch identification number/code;  
h) country of origin; and  
i) Statutory warnings  
12 Sampling  
Sampling shall be done in Accordance to US EAS 104  
  DUS 2143 : 2019  
© UNBS 2019  – All rights reserved  5 
 Bibliography  
[1] US EAS 61, Opaque beer — Specification   
 DUS 2143 : 2019  
© UNBS 2019  – All rights reserved  7 
 Certification marking  
Produc ts that conform to Uganda standards may be marked with Uganda National Bureau of Standards 
(UNBS) Certification Mark shown in the figure below.  
The use of the UNBS Certification Mark is governed by the Standards Act, and the Regulations made 
thereunder. T his mark can be used only by those licensed under the certification mark scheme operated by 
the Uganda National Bureau of Standards and in conjunction with the relevant Uganda Standard. The 
presence of this mark on a product or in relation to a product is an assurance that the goods comply with the 
requirements of that standard under a system of supervision, control and testing in accordance with the 
certification mark scheme of the Uganda National Bureau of Standards. UNBS marked products are 
continually c hecked by UNBS for conformity to that standard.  
Further particulars of the terms and conditions of licensing may be obtained from the Director, Uganda 
National Bureau of Standards.  
 
 DUS 2143 : 2019    
 
ICS 67.160.10  
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