DEAS 1081: 2021   
ICS 83.080.01  
 
© EAC 2021                                                                                                                               First Edition 2021   
 EAST AFRICAN STANDARD  
Plastic Basin — Specification  
EAST AFRICAN COMMUNITY  DEAS 1081: 2021  
ii © EAC 2021  – All rights reserved  
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Reproduction for sales purposes may be subject to royalty payments or a licensing agreement.  
Violators may be prosecuted . DEAS 1081: 2021  
© EAC 2021  – All rights reserved  iii 
 Contents  Page 
Foreword  ................................ ................................ ................................ ................................ ............................  iv 
1 Scope  ................................ ................................ ................................ ................................ ......................  1 
2 Normative references  ................................ ................................ ................................ ............................  1 
3 Terms and definitions  ................................ ................................ ................................ ...........................  1 
4 Requirements  ................................ ................................ ................................ ................................ .........  1 
4.1 general requirements  ................................ ................................ ................................ ............................  1 
4.2 Specific requirements  ................................ ................................ ................................ ...........................  2 
5 Packaging  ................................ ................................ ................................ ................................ ...............  2 
6 Marking and labelling  ................................ ................................ ................................ ............................  2 
6.1 Marking on plastic basin ................................ ................................ ................................ .......................  2 
6.2 Labelling of bulk package  ................................ ................................ ................................ ....................  2 
7 Sampling  ................................ ................................ ................................ ................................ ................  3 
Annex  A (normative)  Reversion Test  ................................ ................................ ................................ ..............  4 
A.1 Specimen  ................................ ................................ ................................ ................................ ................  4 
A.2 Procedure  ................................ ................................ ................................ ................................ ...............  4 
Annex  B (Normative)  Splitting test  ................................ ................................ ................................ ..................  5 
B.1 Specimen  ................................ ................................ ................................ ................................ ................  5 
B.2 Procedure  ................................ ................................ ................................ ................................ ...............  5 
Annex  C (normative)  Surface attack test  ................................ ................................ ................................ ........  6 
C.1 Specimen  ................................ ................................ ................................ ................................ ................  6 
C.2 Procedure  ................................ ................................ ................................ ................................ ...............  6 
Annex  D (normative)  Distortion test  ................................ ................................ ................................ ................  7 
Annex  E (normative)  Overload Test  ................................ ................................ ................................ ................  8 
Annex  F  (normative)  Crit eria for sampling  ................................ ................................ ................................ .... 9 
F.1 Scale of sampling  ................................ ................................ ................................ ................................ .. 9 
F.2 Number of tests and criteria for conformity  ................................ ................................ .......................  9 
Bibliography  ................................ ................................ ................................ ................................ ......................  10 
 DEAS 1081: 2021  
iv © EAC 2021  – All rights reserved  
 Foreword  
Development of the East African Standards has been necessitated by the need for harmonizing requirements 
governing quality of products and services in the East African Communi ty. It is envisaged that through 
harmonized standardization, trade barriers that are encountered when goods and services are exchanged 
within the Community will be removed.  
The Community has established an East African Standards Committee  (EASC)  mandated to develop and 
issue East African Standards  (EAS) . The Committee is composed of representatives of the National 
Standards Bodies in Partner States, together with the representatives from the public and private sector 
organizations  in the community .  
East A frican Standards are developed through  Technical Committees that are representative of key 
stakeholders including government, academia, consumer groups, private sector and other interested parties. 
Draft East African Standards are circulated to stakeholder s through the National Standards Bodies in the 
Partner States. The comments received are discussed and incorporated before finalization of standards, in 
accordance with the Principles and procedures for development of East African Standards. XXXXXX.  
East A frican 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 responsi ble for this document is Technical Committee EASC/TC 072, Plastics and related 
products  
 DRAFT EAST AFRICAN STANDARD  DEAS 1081: 2021  
 
© EAC 2021  – All rights reserved  1 
 Plastic basin — Specification  
1 Scope  
This Draft East African  Standard specifies requirements, sampling an d test methods for plastic basins.  
This standard d oes not ap ply to plastic basins intended for food handling.  
2 Normative references  
There are no normative references in this document.  
3 Terms and definitions  
For the purposes of this document, the  following terms and definitions shall 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  
splitting  
response of the test specimen to heat eviden ced by breaking into  pieces, in whole or in part  
3.2  
distortion  
any change in the shape or original dimensions of a test piece, occurring during heat treatment  
3.3  
reversio n 
reduction i n length expressed as a percentage of the initial length of the specimen  
4 Requirements  
4.1 General requirements  
4.1.1  The basin shall be of good surface finish, free from defects a nd any excessive sprue shall be r emoved 
by cutting   
4.1.2  The basins  shall be described by their capacities in litres.  
4.1.3  The material of the basins shall be natural or coloured polythene or polypropylene. Mater ials shall be 
free from any substance which is injurious to human health.   
2 © EAC 2021  – All rights reserved  
 4.1.4  The thickness of the basin at the sides and bottom shall be such as to enable it to comply with the 
distortion limits specified in 4.2. There shall be no diminution of thickness in the vicinity of the sprue due to 
shrinkage or drawing in of materials at this p oint or to the removal of the sprue.  
4.1.5   The rim of the basin shall be such as to provide an adequate grip.  
4.1.6  To protect the base from abrasion, it shall be so supported that at 90°, when the basin is filled with 
water, it’s under surface excluding  the ribs, is at least 5 mm above the plane surface on which it is placed.  
4.2 Specific requirements  
Basins shall comply with the specific requirements given in table 1.  
Table 1 — Specific requirements for plastic basins  
Characteristic  Requirement s Test m ethod  
Reversion , %, max  5 Annex A  
Splitting , mm, max   2 Annex B  
Surface attack  no delamination  Annex C  
Distortion, %, max  d 10 Annex D  
h 7 
Overload  The edges and the body of the basin 
shall not crack or break and the edges, 
rims or handles shall no t detach from 
the supporting wooden frame.  Annex E  
5 Packaging  
The basins shall be packed in a suitable manner to protect them from dust and surface scratches.  
6 Marking and labelling  
6.1 Marking on plastic basin  
The plastic basin  shall b e legibly and indelibly marked  in English and/or any other official language (French, 
Kiswahili, etc.) used in the importing East African Partner State with the following information.  
a) nominal capacity in litres;  
b) code of resin identification and symbol for recycling in a ccordance with DEAS 1086: 2021 (Code of 
resin identification) ; 
c) name of the manufacturer and/or trademark ; 
d) batch or code number ; and  
e) country of origin  
6.2 Labelling of bulk package  
6.2.1 The bulk package shall contain plastic basins of the same size.   
© EAC 2021  – All rights reserved  3 
 6.2.2 The bulk package shall be legibly and indelibly labelled in English and/or any other official language 
(French, Kiswahili, etc.) used in the importing East African Partner State with the following information : 
a) name and physical address of manufacturer and/ or registered trademark;  
b) name of  the product as, “Plastic basin s”; 
c) capacity of the plastic basin s in litres of water , for example , 5 L, 10  L, 15  L; 
d) declaration  of the number of plastic ba sins in the bulk package;  
e) batch or code number;  
f) instruction for stora ge and disposal of the bulk packaging material; and  
g) country of origin.  
7 Sampling  
Sampling shall be done in accordance with annex F.   
4 © EAC 2021  – All rights reserved  
 Annex  A 
(normative)  
 
Reversion Test  
A.1 Specimen  
A specimen of dimensions 50 mm x 2.5 mm, shall be cut from the side of th e basin such that its main axis is 
radial to the sprue. Five specimens from separate sections of the side shall be examined in each case.  
A.2 Procedure  
The specimens shall be measured accurately and then immersed in boiling water for 30 min. On removal, th ey 
shall be allowed to cool for 1 h after which the length shall be measured to the nearest 0.5 mm. Reversion is 
reduction in length expressed as a percentage of the initial length of the specimen.  
.  
© EAC 2021  – All rights reserved  5 
 Annex  B 
(Normative)  
 
Splitting test  
B.1 Specimen  
The specimen consists of a disc 75 mm diameter with the sprue at its centre, cut from the base of the basin. A 
slit 38 mm ± 1.5 mm long is made in the specimen so that its mid -point lies on the centre of the circ ular 
specimen and extends through its thickness. (The slit may conveniently be cut with a single -edged razor 
blade.)  
B.2 Procedure  
The specimen shall be immersed in boiling water for 30 min. On removal from the water bath, the specimen 
shall be allowed t o cool with no applied constraint.  
  
6 © EAC 2021  – All rights reserved  
 Annex  C 
(normative)  
 
Surface attack test  
C.1 Specimen  
The specimen used shall be exactly similar to that employed in Annex A, but cut from the base of the basin so 
that the centre point is 75 mm from the sprue.  
C.2 Procedure  
Four specimens shall be immersed in an organic solvent at 40 °C for 4 h. The solvent shall be contained in 
about 150 mm x 25 mm test tube immersed in a water bath at 40 °C ± 0.5 °C and allowed to attain the 
temperature before the introduction of th e specimens.  After removal from the solvent, the specimens shall be 
placed on blotting paper and allowed to dry for 1 h. The extent and nature of the effect produced on its surface 
shall be recorded.   
© EAC 2021  – All rights reserved  7 
 
Rim of basin  
Wooden frame  
Figure D.1 — Distortion test  Annex  D 
(normative)  
 
Distortion test  
D.1 The basin shal l be suspended on its edges by use of two wooden frames laid parallel to each other and 
just touching the sides of the basin (see Figure D.1  
D.2 The diameter (d) of the basin shall be measured to the nearest 1 mm.  
D.3 The depth (h) from the edge to the bo ttom of the basin shall also be measured.  
D.4 Water of 90 °C ± 2 °C shall be then poured into the basin until it is filled to a level of 25 mm from the 
rim. After five minutes, the above dimensions shall be measured again. The changes shall be expressed as 
percentages of the initial dimensions   
8 © EAC 2021  – All rights reserved  
 Annex  E 
(normative)  
 
Overload Test  
The basin shall be suspended as described in Annex D. Lead shots or any other suitable material of a weight 
equal to twice that of water required to fill the basin shall be poured  into the basin. The effect on the rim shall 
be noted in terms of the  criteria specified in Table 1   
© EAC 2021  – All rights reserved  9 
 Annex  F  
(normative)  
 
Criteria for sampling  
F.1 Scale of sampling  
F.1.1 In any consignment, all basins of the same size and same type and belonging to the s ame batch of 
manufacture shall be grouped together to constitute a lot.  
F.1.2 For ascertaining conformity of the material to the requirements of this standard , samples shall be 
tested from each lot separately.  
F.1.3 The number of basins  to be sampled from a lot shall depend upon the size of the lot and shall be in 
accordance with Table  F.1. 
Table F .1 — Scale of sampling and permissible number of defectives  
Lot size  For finishing , handle /Rim , construction 
and brimful capacity  Number of basin s to be 
selected for distortion, 
overload test  Subsample size for 
reversion, splitting 
and drop tests  Number of 
basins  to be 
selected  Permissible number 
of defectives  
≤ 50 5 0 3 3 
51 t0 100  8 0 5 3 
101 to 150  13 1 5 3 
151 to 300  20 2 8 3 
301 to 500  32 3 8 3 
501 t o 1 000 50 5 13 4 
≥ 1 001  80 7 13 4 
 
F.2 Number of tests and criteria for conformity  
F.2.1 The basin s selected shall be examined for finishing, handle/rim and workmanship . A basin  failing to 
meet  any one or more of these require ments shall be considere d as defective. The lot shall be considere d as 
conforming to the require ments of these characteristics , if the number of d efective basin s in the sample is less 
than or equal to the co rresponding num ber given in column 3 of Table F .1. 
F.2.2 The lot having b een fo und satisfactory according to F .2.1 shall be s ubjected to distortion test and 
overload test . For this purpose, th e number of buckets given in column  4 of Table F.1 shall be selected at 
random from the lot. These may be selected from those a lready exa mined according to F .2.1 and fo und 
satisfactory.  A basin  failing in any of these tests shall be considered as defective. The lot shall be considered 
to have passed these tests if no defective bucket is found in the sample . 
G.2.3 The lot having been fo und s atisfactory according to F.2.1 and F .2.2 shall  finally be subjected to 
brimful, drop, reversion and splitting tests   
10 © EAC 2021  – All rights reserved  
 Bibliography  
[1] US 766:2007, Plastic basin — Specification  
[2] TZS 1877 –2: 2016 , Plastic container — Specification — Part 2: Basin  
 DEAS 1081: 2021    
 
© EAC 2021  – All rights reserved