DRAFT UGANDA STANDARD  
  DUS 2671  
First  Edition  
2023 -mm-dd 
 
 
 Reference number  
DUS 2671 : 2023 
© UNBS 2023   
  
Post consumer polyethylene Terephthalate (PET) recyclates — 
Specification  
 DUS 2671 : 2023  
ii © UNBS 2023  – 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. User s are 
responsible for its correct application  
© UNBS  2023 
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilised in any 
form or by any means, electronic or mechanical, including photocopying and microfilm , without prior written 
permission from UNBS.  
Requests for permission to reproduce this document should be addressed to  
The Executive Director  
Uganda National Bureau of Standards  
P.O. Box 6329  
Kampala  
Uganda  
Tel: +256 41 7 333 2 50/1/2 
Fax: +256 41 4 286 123  
E-mail: info@unbs.go.ug  
Web: www.unbs.go.ug  DUS 2671 :2023  
© UNBS 2023  – 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 Organisatio n for Standardisation (ISO)  
(b) a contact point for the WHO/FAO Codex Alimentarius Commission on Food Standards, and  
(c) the National Enquiry P oint 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 st akeholders 
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 rev iews 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 303, Plastics and related 
products.  
 DRAFT UGANDA STANDARD  DUS 2671 : 2023  
 
© UNBS 2023  – All rights r eserved  1 
 Post-consumer poly(ethylene terephthalate) (PET) bottle 
recyclates  — Specification  
1 Scope   
This Draft Uganda standard specifies requirements, sampling and test methods for post -consumer 
polyethylene terephthalate (PET)  recyclates  in the form of flakes and pellets  
2 Normative references   
The following documents are referred to in the text in such a way that some 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.  
ASTM D7486 -14, Standard Test Method For Measurement Of Fines And Dust Particles On Plastic Pellets By 
Wet Analysis  
ASTM F2013 -10, Standard Test Method for Determination of Resid ual Acetaldehyde in Polyethylene 
Terephthalate Bottle Polymer Using an Automated Static Head -Space Sampling Device and a Capillary GC 
with a Flame Ionization Detector  
ISO 1133 -2, Plastics — Determination of the melt mass -flow rate (MFR) and melt volume -flow rate (MVR) of 
thermoplastics — Part 2: Method for materials sensitive to time -temperature history and/or moisture  
ISO 1628 -1, Plastics — Determination of the viscosity of polymers in dilute solution using capillary 
viscometers — Part 1: General principle s 
ISO 1628 -5, Plastics — Determination of the viscosity of polymers in dilute solution using capillary 
viscometers — Part 5: Thermoplastic polyester (TP) homopolymers and copolymers  
US ISO 2859 -1, Sampling procedures for inspection by attributes — Part 1: Sampling schemes indexed by 
acceptance quality limit (AQL) for lot -by-lot inspection  
ISO 14782,  Plastics — Determination of haze for transparent materials  
ISO 12418 -1, Plastics — Post-consumer poly(ethylene terephthalate) (PET) bottle recyclates — Part 1: 
Designation system and basis for specifications  
US ISO 12418 -2, Plastics — Post-consumer poly(ethylene terephthalate) (PET) bottle recyclates — Part 2: 
Preparation of test specimens and determination of properties  
ISO 15512 , Plastics — Determination of wat er content  
ISO 15270 , Plastics — Guidelines for the recovery and recycling of plastics waste   
2 © UNBS  2023 – All rights reserved  
 3 Terms and definitions  
For the purposes of this document, the following terms and definitions apply.  
ISO and IEC maintain terminological databases for use in sta ndardization at the following addresses:  
— ISO Online browsing platform: available at http://www.iso.org/obp  
3.1  
pellet  
small mass of preformed moulding material, having relatively uniform dimensions in a given lot, used as 
feedstock in moulding and extr usion operations  
3.2 
recyclat e 
plastic material resulting from the recycling of  post consumer PET waste  
3.3  
post -consumer  
descriptive term covering material, generated by the end -users of products, that has fulfilled its intended 
purpose or can no longer  be used (including material returned from within the distribution chain)  
3.4 
flake 
plate -like regrind  
3.5 
regrind  
shredded and/or granulated recovered plastics material in the form of free -flowing material  
3.6  
recycled PET (rPET)  
recovered materials re sulting from industrial packagings and post -consumer PET materials that have been 
cleaned, prepared and processed into new recyclates  
3.7  
bulk density  
weight per unit volume of plastic flakes or pellets  
3.8 
intrinsic viscosity  
limiting value of the reduc ed viscosity or the inherent viscosity at infinite dilution of the polymer  
4 Requirements   
4.1 General requirements  
4.1.1 The recycling process shall be don e in accordance with ISO 15270.  
4.1.2  The input to the recycling process shall originate from a pro duct loop which is in a closed and 
controlled chain ensuring that only PET materials are u sed and any contamination is  ruled out.  
4.1.3 The designation system for the post -consumer PET recyclates shall be done as described in ISO 
12418 -1.  
4.1.4 The recyc lates shall be manufactured in accordance with good manufacturing practice (GMP) so that, 
under normal or foreseeable conditions of use, they do not transfer their constituents to food in quantities DUS 2671 : 2023  
© UNBS 2023  – All rights reserved  3 
 which could endanger human health; bring about an unaccep table change in the composition of  food; bring 
about deterioration in the organoleptic characteristics (taste, odour and texture) thereof . 
4.2 Specific requirements  
4.2.1  Recycled PET fl akes shall comply with the specific requirements in  Table 1 when test ed in 
accordance with the test methods specified therein  
Table 1 ─ Specific requirements for recycled PET flake s 
S/No  Parameters  Requirement  Test methods b 
i.  Fine particle content, %  ≤ 0.1  ASTM D7486  
ii.  Intrinsic viscosity (IV), dl/g  .0.60 – 0.84 ISO 1628 -5 in combination 
with ISO 1628 - 1 
iii.  Contamination due t o label and other visible 
contaminants, mg/kg, max  300  
 
ISO 12418 -2 
 iv.  Contamination due to Polyvinyl Chloride (PVC), 
mg/kg  < 5 
v.  Contamination due to Polyolefins (including 
adhesives), mg/kg, max  50 
vi.  Metal (aluminium, steel),  mg/k g < 5 Spectroscopic analysis:  
FTIR or XRF  
vii.  Water content, % ≤1.00 ISO 15512  method  B 
viii.  Bulk density, kg/m3 As specified by 
manufacture r ISO 12418 -2 
4.2.2  Recycled PET pellets shall comply with the physi cal and chemical requirements in  Table 2 when 
tested in accordance with the test methods specified ther ein 
Table 2 — Specific requirements  for recycled PET pellets  
S/N Parameters  Requirement  Test methods  b 
i.  Fine particle content, % (max) (percentage of 
particles passing through the sieve 1mm)  0.05 ASTM D7486  
ii.  Metal (aluminium, steel), mg/kg, ma x <5 Spectr oscopic analysis:  
FTIR or XRF  
iii.  Intrinsic viscosity (IV) a, dl/g, min  0.61 ISO 1628 -5 in combination 
with ISO 1628 - 1 
iv.  Haze 3mm thick plaques, %, max at 550nm  13 ISO 14782   
v.  Acetaldehyde content, ppm (max)  1.0 ASTM F2013 -10 
vi.  Limonene,  μg/kg  (max)  < 20 GC/MS   
vii.  Water content, %  < 0.3 ISO 15512  
a Solvent ─ mixture of phenol and 1,1,2,2 -tetrachloroethane (6:4)  
b A certificate of analysis, including the test results for each batch of recyclate, the sampling method and the number of re plicates, shall 
be provided by the supplier to the purchaser on request. The sampling method and the number of replicates are important in de termining 
the quality of the material. Quality levels can vary within the batch and from batch to batch, depending on the source of the recyclate  
4.2.3 The specific migration limit of compound from the recyclates shall not excee d the limit specified in 
Table 3  when determined in accordance with the test method specified therein.   
4 © UNBS  2023 – All rights reserved  
 Table 3  — Specific migration limits for co mpounds used in the manuf acture of recyclates.  
S/N Compound  Specific Migration Limit, 
mg/kg of food, max.  Test method  
i.  Mono - and diethylene glycol (including the ester of 
stearic acid with ethylene glycol)  30 ASTM D4754 -98 
ii.  Terephthalic acid  7.5 
iii.  Isoph thalic acid  5.0 
iv.  Antimony trioxide(calculated as antimony)  0.04 
v.  2-Aminobenzamide (anthranilamide)  0.05 
5 Packaging  
The recyclates shall be packaged in suitable packaging materials that maintain their integrity prevent the 
ingress of dust, moisture a nd other foreign matters during transportation and storage  
6 Labelling  
The following information shall be legibly and indelibly labelled on the packaging, container or in 
accompanying documents:  
a) name of product as “PET Recyclates”  
b) form of product as ,”fla kes” or “pellets”  
c) name, trade mark and physical address of the manufacturer;  
d) batch number;  
e) date of manufacture; and  
f) words “for food contact” or symbol for food contact material . 
 
 
g) symbol indicating tha t the product  is made from recycled PET material  
 
7 Sampling  
The sampling crite ria shall be in accordance with US ISO 2859 -1 DUS 2671 : 2023  
© UNBS 2023  – All rights reserved  5 
 Bibliography  
[1] DRS 499 -1: 2022 , Post-consumer polyethylene terephthalate (PET) containers — Specification — Part 
1: Food grade PET recyclates, preforms and containers  
[2] US ISO 472 : 2013, Plastics - Vocabulary  
 
 DUS 2671:2023  
© UNBS 2023  – All rights r eserved  7 
 Certification marking  
Products 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. This 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 
prese nce of this mark on a product or in relation to a product is an assurance that the goods comply with the 
requirements of that s tandard 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 checked by UNBS for conformity to that standard.  
Further particula rs of the terms and conditions of licensing may be obtained from the Director, Uganda 
National Bureau of Standards.  
 
 DUS 2671:202    
 
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© UNBS 2023 – All rights reserved