 DEAS 987 -2: 2021 
ICS 55.040  
 
© EA C 2021                                                                                                                          First Edition 2021  
 DRAFT EAST AFRICAN STANDARD  
Glass containers — Specification — Part 2: Glass jars  
EAST AFRICAN COMMUNITY  
 
 
 DEAS 987 -2: 2021  
ii © EAC 2021  – All rights reserved  
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 DEAS 987 -2:2021  
© EAC 2021  – All rights reserved  iii 
 Foreword  
Development of the East Afric an 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 goods an d 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 Nationa l 
Standards Bodies in Partner States, together with the representatives from the public and private sector 
organizations  in the community .  
East African Standards are developed through  Technical Committees that are representative of key 
stakeholders includ ing government, academia, consumer groups, private sector and other interested parties. 
Draft East African Standards are circulated to stakeholders through the National Standards Bodies in the 
Partner States. The comments received are discussed and incorpo rated before finalization of standards, in 
accordance with the Principles and procedures for development of East African  Standards.  
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 066, Packaging . 
Attention is drawn to the possibility that some o f the elements of this document may be subject of patent 
rights. EAC shall not be held responsible for identifying any or all such patent rights.  
 DRAFT EAST AFRICAN STANDARD  DEAS 987 -2:2021 
 
© EAC 2021  – All rights reserved  1 
 Glass containers — Specification  — Part 2: Glass jars  
1 Scope  
This Draft East African Standard specifies the  requirements, methods of sampling and test for glass jar used 
in packaging.  
This standard does not cover glass containers used in pharmaceutical industry and laboratory . 
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.  
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 7348, Glass containers — Manufacture — Vocabulary  
ISO 7458,  Glass containers — Internal pressure resistance — Test methods  
ISO 745 9, Glass containers — Thermal shock resistance and thermal shock endurance — Test methods  
ISO 8106,  Glass containers — Determination of capacity by gravimetric method — Test method  
ISO 9008,  Glass bottles — Verticality — Test method  
3 Terms and definitions  
For the purposes of this document, the following terms and definitions  and those in ISO 7348 shall  apply . 
ISO and IEC maintain terminological databases for use in standardization at the following addresses:  
— IEC Electropedia: available at http://www.electropedia.org/  
— ISO Online browsing platform: available at http://www.iso.org/obp  
3.1 
filling level  
distance from the top of the neck finish to the centre of the meniscus measured on the centre line  of the  glass 
jar 
3.2 
internal pressure resistance  
ability of the glass jar to withstand internal pressure without breaking  DEAS 987 -2:2021  
2 © EAC 2021  – All rights reserved  
 3.3 
vacuity  
free space left above the liquid in a sealed container. It is expressed as a percentage of the nominal volume of 
the li quid 
3.4 
verticality  
horizontal deviation of the centre of the glass jar  finish from a vertical line through the centre of the base  
3.5 
thermal shock resistance  
actual temperature change, measured in degrees Celsius, which a container can withstand withou t breaking.  
3.6 
glass jar  
wide mouthed cylindrical container made of glass  
4 Requirements  
4.1 General requirements  
4.1.1.1  The glass  jars shall be transparent. They shall also be free from cracks and shall be reasonably free 
from stones, blisters, bubbles,  cords, mould marks, chill marks and other visual defects. They shall be well 
annealed.  
4.1.1.2  The jars shall be of the pattern as agreed t between the purchaser and the supplier. The glass jar 
design shall  be such that it complies with  the requirement of  this Standard. 4.1.1.3  The jars shall be well 
formed with the distribution of glass all over the walls and the base as uniform as possible, avoiding any 
wedge bottom. The glass jars shall be symmetrical around the axis and the base shall rest on a plane su rface 
without rocking.  
4.1.1.4  The glass jar shall be uniformly smooth, evenly finished and have tamper -proof neck when complete 
with a lid  
4.2 Specific requirements  
5.2.1 Nominal capacity  
When tested in accordance to ISO 8106 the nominal capacity at filli ng level shall be as specified in T able 1  
Table 1 — Nominal capacity (ml) mean values  
Nominal capacity  
ml Tolerance  
ml, ± Nominal capacity  
ml Tolerance  
ml, ± 
Over  Up to and  
including  Over  Up to and  
including  
- 100 2.7 450 500 6.0 
100 125 3.0 500 600 6.5 
125 150 3.3 600 700 7.1 
150 175 3.5 700 800 7.6 
175 200 3.8 800 900 8.0 
200 250 4.2 900 1 000  8.4 
250 300 4.6 1 000  1 150  11.5 
300 350 5.0 1 150  1 250  12.5 
350 400 5.3 1 250  1 500  15.0 
400 450 5.7 - - - DEAS 987 -2:2021  
© EAC 2021  – All rights reserved  3 
  
5.2.2  Dime nsions 
5.2.2.1  Finished diame ter of the Glass Jar  
The jar dimension shall comply with the requirements of this standard when measured by means of go, no -go 
gauge, using a ring gauge for the maximum diameter, and a gap gauge with a 38 mm wide anvil for the 
minimum diameter . 
5.2.2.2  Thickness of the wall of the glass Jar  
The wall thickness of the glass jar shall be same throughout the circumference at any given level with a 
tolerance of ± 33 % upto thickness of 2 mm and  ± 25% for thickness above 2 mm upto 3  mm, and ±20% for 
thickness abo ve 3mm and said level excluding embossing if any when tested using Vernier caliper.  
5.2.3 The glass jars shall comply with specific requirements given in Table 2 when tested in accordance 
with the test methods specified therein.  
Table 2 — Specific requirem ents for glass jars 
S/N Parameter  Requirement  Test method  
i.  Minimum internal pressure resistance , bar 
sustained for 60 s    
7a ISO 7458  
ii.  Design vacuity , %, min.  3.5 ISO 8106  
iii.  Verticalityb, mm, max.  3 ISO 9008  
a 1 bar = 14.5 lbf/in2 
1 bar = 105 Pa 
1 bar =  1.019 Kg/cm2 
a NOTE Incase is used in modified atmosphere for packaging . 
b This deviation is equal to half the diameter of a circle described by the centre of the finish when the glass jar as it  
rotates around the vertical axis through the centre of the base . 
 
5.2.4 Brimful capacity  
When tested in accordance with ISO 8106, the glass jars shall comply with the declared volume.  
5.2.5  Thermal shock resistance  
When tested in accordance with ISO 7459, the glass jar shall resist, without breakage, the thermal shock 
imposed by a fall in temperature of 43 °C.  
5.2.6  Resistance to acidity  
The jar surface shall show neither change in colour nor loss of gloss after 24 h in 2.5 % solution by volume of 
phosphoric acid at temperature range of 18 ºC – 35 ºC.  
5.2.7  Resist ance to a lkalinity  
The jar surfaces shall not show any appreciable loss of gloss when a jar is submerged in the test solution at  
90 ºC ± 2 ºC for a continuous period of 8 h. This also applies to any applied colour labeling on the jars.  DEAS 987 -2:2021  
4 © EAC 2021  – All rights reserved  
 Composition of test solution:  
Sodium hydroxide  (NaOH, Pellets)                        9 % by mass  
Trisodium phosphate (Na3PO412H 2O)                   1 % by mass  
Distilled water                                                      90 % by mass  
5.2.8  Resistance to humidity  
The jar surface shall further not darken when subjected to an atmosphere of 100 % relative humidity, 
saturated with hydrogen sulphide at the prevailing room temperature, for a continuous period of 24 h.  
5.2.6  Weights and measures  
The volume and fill of the g lass jars shall comply with weights and measures regulations in the respective 
Partner States.  
6 Packaging  
The glass jars shall be packaged in a manner that prevents damage, contamination during handling, storage 
and transportation.  
7 Labelling  
7.1 Labelli ng on the glass jars  
The glass jars shall be embossed on the insweep (heel) or base with the following information:  
a) manufacturer’s name and/or registered trade mark;  
b) cavity or mould number;  
c) year of manufacture; and  
d) brimful capacity.  
7.2 Labelling on bulk p ackage  
The bulk package shall be legibly and indelibly marked with the following information:  
a) manufacturer’s name, address and /or registered trade mark;  
b) batch number;  
c) number of glass jars;  
d) handling instructions;  
e) capacity of the glass jar;  
f) name of the prod uct; and  
g) date of manufacture.  DEAS 987 -2:2021  
© EAC 2021  – All rights reserved  5 
 8 Sampling  
Sampling of glass jars shall be done in accordance with ISO 2859 -1. DEAS 987 -2:2021  
6 © EAC 2021  – All rights reserved  
 Bibliography  
KS 2387:2019, Glass Jars — Specification  
IS 9781, Glass jars for jams, jellies and marmalades — Specification  
 DEAS 987 -2:2021    
 
© EAC 2021  – All rights reserved  
  
  