DRAFT UGANDA STANDARD  
  DUS 2289  
First  Edition  
2020 -mm-dd 
 
 
 Reference number  
DUS 2289 :2020  
© UNBS 2020   
  
Medical safety  goggle  — Specification  
 DUS 2289:  2020  
ii © UNBS 2020  – 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 ap plication  
© UNBS  2020   
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 4 333 2 50/1/2/3  
Fax: +256 41 4 286 123  
E-mail: info@unbs.go.ug  
Web: www.unbs.go.ug  DUS 2289:  2020  
© UNBS 2020  – 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 governme nt, 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 reco mmending 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 5, Chemical and 
Environment.  DUS 2289:  2020  
iv © UNBS 2020  – All rights reserved  
 Introduction  
The novel coronavirus, wh ich causes the disease COVID -19, is believed to spread among people in three 
ways. According to the Centers for Disease Control and Prevention (CDC), the virus spreads:  
1. From close contact with people who have it.  
2. From respiratory droplets that become airbo rne when someone, who is infected, sneezes or coughs 
nearby.  
3. From touching our mouths, noses or eyes after touching a surface that has the virus on it.  
The CDC says that “infectious agents are introduced to the eye either directly (e.g., blood splashes, 
respiratory droplets generated during coughing or suctioning) or from touching the eyes with contaminated 
fingers or other objects.  Therefore  eye protection is equally important and “provides a barrier to infectious 
materials entering the eye and is often us ed in conjunction with other PPE s. 
For infection control, droplets  safety  goggles of indirectly vented or non -vented  models  are the preferred PPE  
for eye protection . 
  DRAFT UGANDA STANDARD  DUS 2289 : 2020  
 
© UNBS 2020 – All rights reserved  1 
 Medical  safety  goggle — Specification  
1 Scope   
This Draft Uganda Standard specifies  requirements , sampling and methods of test  for medical  safety  goggles , 
of non-vented or indirect vented models , to be used for protection against infectio us agents, irritating fluids  
that may affect the eyes  during medical procedures .  
This standard  does not apply to safety goggles for other applications  
2 Normative references   
The following referenced documents referred to in the text in such a way that some or all of their content 
constitutes requirements of this document. For dated references, onl y the edition cited applies. For undated 
references, the latest edition of the referenced document (including any amendments) applies . 
ISO 18526, -4, Eye and face protection — Test methods — Part 4: Headforms  
3 Terms and definitions   
For the purposes of t his document, 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  
goggle  
protector intended to fit the face sur -rounding the eyes in order to shield the eyes from certain hazards . 
3.2  
frame  
structure, which holds the lens or lenses on the wearer.  
3.3  
lot 
goggles of the same type, class, and size  manufa ctured from the same material under  similar conditions of 
production  
4 Materials  
4.1 Goggle frame  
The frame of the goggles shall be of sound construction and made of durable plastic or other suitable 
materials.  DUS 2289: 2020  
2 © UNBS 2020  – All rights reserv ed 
 4.2 Head -band or harness  
The material used in  manufacture of head -band shall be sweat resistant, non -irritant  and non-sensitizing . 
5 Requirements  
5.1 General requirements  
5.1.1 The goggles shall consist of a frame, lens or lenses and an adjustable head -band or any suitable device 
to retain the goggles  in front of eyes . 
5.1.2 Adjustable parts or components of goggles shall be easily accessible for adjustment or replacement . 
5.1.3 Effective ventilation in the goggles shall be provided. The goggles shall be designed to prevent direct 
acces s of droplets to the eyes  
5.1.4 The goggles shall be free from projections, sharp edges or other features likely to cause discomfort 
in wear.  
5.1.5 Lenses shall be free, to within 3 mm of the edges, from surface defects such as holes, scratches, 
cracks, wa ves, dull spots and from inherent defects such as bubbles, grain and clauding.  
5.1.6 The design of goggles shall be such that it shall not cause discomfort to wearer. This may be 
achieved by providing padding or other suitable means.  
5.1.7  If coloured, the  goggle  shall n ot bleed.  
5.2 Specific requirement s  
The go ggle shall conform to the requirements given in Table 1 when tested in accordance with the test 
methods specified therein . 
Table 1 — Specific requirements of goggles  
Characteristic  Requirement  Test method  
Corrosi on resistance in case of 
metallic components  No sign of corrosion  Annex A  
Suitability to disinfection  No visible damage  Annex B  
Protection against droplets  No blue c olouration within either of the 
two circles  Annex C  
6 Packaging  
Goggles shall be pack aged in containers that maintain the product’s integrity.  
7 Labelling  
The package shall be indelibly and legibly labelled with the following information:  
a) name of produc t as “medical  safety goggle ;  
b) dimensions;  DUS 2289 : 2020  
© UNBS 2020  – All rights reserved  3 
 c) material;  
d) country of or igin; 
e) physical address o f the manufacturer ; 
f) instruction for use;  
g) lot / batch number ;  
h) date of manufacture; and 
i) code  of resin identification   
8 Sampling  
Sampling shall be done in accordance with Annex  D. DUS 2289: 2020  
4 © UNBS 2020  – All rights reserv ed 
 Annex  A 
(normative)  
 
Determination of c orrosion resis tance  
A.1  General  
Resis tance to corrosion of metal parts such as frames, side - shields or other metal components is judged by  
immersing them in a boiling aqueous solution of sodium chloride for specified period.  
A.2 Reagents  
Sodium Chloride Solutio n — 10 percent (m/m) in water.   
A.3 Procedure  
A.3.1  Clean the metal parts of the eye -protector by removing from the surface all adhering matter, 
particularly oil and grease. Then immerse them in the boiling sodium chloride solution for 15 minutes.  
A.3.2  Remove the metal parts and next  immerse them for 15 minutes in sodium chloride solution 
maintained at room temperature. After removal from this solution and without wiping off the adhering liquid, 
leave the metal parts to dry for 24 hours at room temperature. The n rinse them in lukewarm  water, allow to 
dry, and inspect for any signs of corrosion.  DUS 2289 : 2020  
© UNBS 2020  – All rights reserved  5 
 Annex B  
(normative)  
 
Test for suitability for disinfection  
B.1 All goggle  materials shall be such as to withstand, without visible deterioration and corrosion, washing 
in detergent and warm  wate r; rinsing to remove all traces of detergent;  and disinfection by one or more of the 
following  methods  (See B.2, B.3 and B.4).  
B.2 Immersion for 10 minutes in a solution of formalin made by mixing one part of 40 % formaldehyde 
solut ion with 9 parts of wate r at 27 °C ± 2°C; 
B.3 Subjection to a moist atmosphere of formaldehyde of 90 % humidity for a period of 10 minutes at 27 °C 
± 2°C; and  
B.4 Immersion for 10 minutes in a solution of modified phenolics, hypochlorite, or quaternary ammon ium 
compounds in strengt h specified by the manufacturer at  27°C ± 2°C. DUS 2289: 2020  
6 © UNBS 2020  – All rights reserv ed 
 Annex C  
(normative)  
 
Protection against droplets  
C.1 Principle  
This test is intended to demonstrate that the protector prevents liquid droplets from reaching the eye.  
C.2 Reagents, mat erial and apparatus  
C.2.1 Headform, according to ISO 18526 -4. 
C.2.2  Hand operated atomiser, producing fine droplets (not mist).  
C.2.3  White non -fluorescent blotting paper, with a minimum water absorptivity of 0 .02 g/cm2, of sufficient 
size to protrude at l east 20 mm all around th e periphery of the test sample. The blotting paper is marked in 
pencil with two circles with diameter in accordance with Table C.1 at an interpupillary distance specified by the 
nominated headform in ISO 18526 -4, within a tolerance of ±1 mm, corresponding to the ocular areas of the 
appropriate size of headform.  
Table C.1 — Nominal diameter of the circle and the PD on the blotting paper (Tolerance on dimensions 
±0,5 mm)  (Dimensions in millimetres ) 
Headforms  Type 1  Type 2  
Circle dia meter  PD Circle diameter  PD 
C6 36 52 — — 
C12  41 58 — — 
S 47 60 43 63 
M 52 64 45 64 
L 55 68 51 70 
 
C.2.4  Detecting solution , prepared by dissolving 5 .0g ± 0.5g thymol blue sodium salt in 500  ml ± 50 ml 
ethanol and adding 500  ml ± 50 ml  of water, stir ring constantly (filter if a precipitate forms) to obtain 1 .0 L ± 
0.1L of solution.  
C.2.5  Absorbent cotton lint (surgical dressing),  mass per unit area approximately 185 g/m2.  
C.2.6  Spray solution,  0.1 mol/l solution of sodium carbonate in water.  
C.3 Proce dure  
C.3.1  Cover the fac ial region of the headform ( C.2.1) as defined in the applicable product's requirement  
standard with layers of cotton lint that is then covered with blotting paper that has previously been  DUS 2289 : 2020  
© UNBS 2020  – All rights reserved  7 
 dipped in the detecting solution  information  to be supplied by the m anufacturer, if provided, so that the blotting 
paper protrudes all around its periphery by at least 20 mm.  
C.3.2  Adjust the headband to a normal amount of tension.  
C.3.3  Adjust the number of layers of lint, as necessary, to ensure a  good seal between the t est sample and  
the headform.  
C.3.4  Spray the mounted test sample with the spray solution holding the atomiser at a distance of 
approximately 600 mm from the headform, spraying from all directions. Spraying is carried out with a volu me 
of 5 ml to 10 ml of s pray solution until the blotting paper around the periphery of the test sample turns a 
uniform blue colour. The blotting paper ( C.2.3) shall not be over -wetted to cause it to drip.  
C.4 Test report  
Report whether the blotting paper shows a blue coloration within either of the two circles indicating that the 
spray solution has penetrated the protector.  DUS 2289: 2020  
8 © UNBS 2020  – All rights reserv ed 
 Annex D 
(normative)  
 
Sampling  
D.1 Sample Size  — The number of goggles to be selected from each lot shall depend upon the size of the 
lot and shall be in accor dance with Table 1.  
Table D1 — Scale of Sampling  
Lot Size  Sample Size  Acceptance number  
(1) (2) (3) 
up to 100  20 1 
101 to 150  32 2 
151 to 300  50 3 
301 to 500  80 5 
501 to 1 000  125 7 
1 001 to 3 000  200 10 
3 001 and above  315 14 
 
D.2 These goggles  in the sample shall be  selected from the lot at random.  
D.3 Each of the goggles  selected in the  sample shall be subjected to the test mentioned  in the standard . A 
goggle  failing to meet  anyone or more of the requirements of the  standard shall be considere d as defective.  
D.4 The lot shall be considered as conforming to the  requirements of this standard if number of  defectives 
found in the sample is less than or  equal to the corresponding acceptance number  given in column 3 of Table 
D.1. DUS 2289 : 2020  
© UNBS 2020  – All rights reserved  9 
 Bibliography  
[1] IS 7524 -1: 1980 , Methods of test for eye protectors, Part1: Non -optical tests  
[2] IS 8521 -2: 1994 , Industrial safety face -shields, Part 2: With wire mesh visor  
[3] IS 14352 : 1996 , Miners safety goggles  
[4] ISO18526 -3: 2020 , Eye and fa ce protection — Test met hods —Part 3: Physical and mechanical 
properties  
  DUS 2289 : 2020  
© UNBS 2020 – All rights reserved  11 
 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 Certificati on 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 w ith 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 checked 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 Stand ards.  
 
 DUS 2289 : 2020    
 
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