KENYA STANDARD         KS 2409 -8: 201 8 
ICS 13.030.30; 13.340.20  
  
 
 
 
 
 
 
 
 
 
 
 
 
Health care wastes management 
commodities  
 
Part 8:  
 
Safety goggles  — Specification  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
©KEBS 201 8  First Edition 201 8 
 
PUBLIC REVIEW DRAFT  
 KS 2409 -8: 2018 
 
ii NATIONAL WORKSHOP ATTENDANCE  
 
The following organizations were represented on the  National Workshop Agreement Meeting;  
 
City Council of Nairobi  
Coast Provincial General Hospital  
Nursing Council of Kenya  
Kenya Medical Supplies Agency  
Kenyatta National Hospital  
Ministry of Medical Services  
Kenya Expanded Progrmme of Immunization  
Reprent ative, Rural Health Facilities  
Ministry of Public Health and Sanitation  
Government Chemist 's Department  
Moi Teaching and Referral Hospital  
Path-Kenya  
Christian Health Association of Kenya  
Ministry of Public Health and Sanitation  — Office of the Chief Publi c Health Officer  
Ministry of Medical Services  — Office of the Chief Nursing Officer  
Ministry of Medical Services  — Office of the Director of Medical Services  
Kenya Medical Scientific Technical Officers Ass ociation  
Kenya Medical Research Institute  
Kenya Bureau of Standards  —  Secretariat  
 
 
 
REVISION OF KENYA STANDARDS  
 
In order to keep abreast of progress in industry, Kenya Standards shall be regularly reviewed. Suggestions 
for improvements to published standards, addressed to the Managing Director, Kenya B ureau of Standards, 
are welcome.  
 
 
 
 
 
 
© Kenya Bureau of Standards, 20 12 
 
Copyright. Users are reminded that by virtue of Section 25 of the Copyright Act, Cap. 12 of 2001  of the Laws of Kenya, copyr ight 
subsists in all Kenya Standards and except as provid ed under Section 26 of this Act, no Kenya Standard produced by Kenya Bureau of 
Standards may be reproduced, stored in a retrieval system in any form or transmitted by any means without prior permission in  writing 
from the Managing Director . 
 
 
 
 
 KENYA STANDARD         KS 2409 -8: 2018 
ICS 13.030.30; 13.340.20  
iii  
 
 
 
 
 
 
 
 
 
 
 
 
 
Health care wastes management commodities  
 
Part 8:  
 
Safety goggles  — Specification  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
KENYA BUREAU OF STANDARDS (KEBS)  
 
Head Office:  P.O. Box 54974, Nairobi -00200, Tel.: (+254  020) 605490, 602350, Fax: (+254 020)  604031  
E-Mail: info@kebs.org,  Web:http://www.kebs.org   
 
Coast Region     Lake Region          Rift Valley Region  
P.O. Box 99376, Mombasa -80100   P.O. Box 2949, Kisumu -40100        P.O. Box 2138, Nakuru -20100  
Tel.: (+254  041) 229563, 230939/40  Tel.: (+254 057) 23549, 22396        Tel.: (+254 051) 210553, 210555  
Fax: (+254  041) 229448    Fax: (+254 057) 21814  
 KS 2409 -8: 2018 
 
iv  
Foreword  
 
Foreword  
 
Kenya Bureau of Standards is a national standards bod y (NSB). The work of preparing Kenya  Standards is 
normally carried out through national  technical committees. Each member body interested in a subject for 
which a technical committee has been established has the right to be represented on that committee. 
National  organizations, governmental and non -governmental, in liaison with KEBS , also tak e part in the 
work.  
Kenya  Standards are drafted in accordance with the rules given in the KS ISO/IEC  Directives, Part  2. 
The main task of technical committees is to prepare National  Standards. Draft Kenya  Standards adopted by 
the technical committees are circulated to the technical committee member s for ballo ting. Publication as a 
Kenya  Standard requires approval by at least 2/3 of the member s casting a vote.  
Attention is drawn to the possibility that some of the elements of this document may be the subjec t of patent 
rights. KEBS  shall not be held responsible for identifying any or all such patent rights.  
This Kenya Standard  was prepared by Technical Committee KEBS /TC 136, Medical Equipment, Tools and 
Devices.  
 
 
 
 
 
 
 
 KENYA STANDARD         KS 2409 -8: 2018 
 
 
1  
Health care wastes management commodi ties 
 
Part 8:  
 
Safety goggles — Specification  
 
 
 
1 Scope  
 
This National Workshop Agreement prescribes the requirements and test methods for the general 
condiderations relating to goggles, such as design, classification, requirements applicable to safety go ggles, 
sampling and identification.  
 
2 Field of a pplication  
 
This National Workshop Agreement shall not apply to sunglasses for general use ot to “fashion” spectacles 
which are used principally as part of costume or of fancy dress.   
 
3 Definitions  
 
For th e purpose s of this National Workshop Agrreemnt, the following definitions and those that are defined in 
KS ISO 4007, Personal eye -protectors - Vocabulary  shall apply.  
 
3.1 
safety goggles  
an eye -protector fitted with a single or two separate occulars desig ned to enclose the orbital area  
 
4 Requirements   
 
4.1 Construction  
 
Eye-protectors shall be soundly constructed of polycarbonates or any other appropriate material, and shall 
not have metallic coating or metallic parts except screws and hinges. Safety goggl es shall be free from 
obvious defects and shall meet the relevant performance requirements.  
 
4.2 Comfort of the wearer  
 
Safety goggles shall be free from projections, sharp edges or other features which could cause discomfort. 
Furthermore, materials used s hall be so selected as to avoid any skin irritation and, in case of anti -dust 
goggles, the construction shall allow for the specuial risk of irritation.  
 
4.3 Fittings  
 
Adjustable parts or components incorporated in safety goggles shall be easily adjusted a nd replaced.  
 
4.4 Thermal conductivity  
 
Except for spectacle frames, all materials which are likely to be exposed to thermal 
radiation during use and which comes into contact with the waste handler shall have a 
maximum thermal conductivity of 0.2 W .m-2.K- 1. 
 
4.5 Composition of oculars  
 
Shall be made of plastics or any other suitable synthetic materials, of toughened or laminated glass or any 
other combination of these materials.  
 KS 2409 -8: 2018 
 
2 4.6 Rrequirements  
 
All goggles shall meet the requirements given in 4 .1. Furt hermore, according to their use, eye -protectors 
shall meet one or more of the pa rticular requirements given in  7.2 of KS ISO 4849, Personal eye -protectors – 
Specifications.  
 
4.7 Dimensions  
 
Occulars shall have the following dimensions:  
 
Circular oculars: d iameter 40 mm . 
One piece lens goggles, face -shilds: 105 mm × 50 mm.  
 
5 Sampling s cheme and criteria for conformity for the heavy -duty gloves  
 
5.1 Lot 
 
In any consignment, all the safety goggles  manufactured from same material under similar conditions of 
manufacturer, shall be grouped together to constitute a lot.  
 
5.2 For ascertaining the conformity to this standard, samples of safety goggles  shall be selected and 
tested separately for each lot.  
 
5.3 The number of safety goggles  to be selected at random f rom a lot depending upon the size of the lot 
shall be in accordance with Table 1 , Column s 1 and 2 of.  
 
 
Table 1  — Sample size and criteria for conformity for safety goggles  
 
Lot size  Sample size  Permissible  
(Number of goggles in  (Number of goggles to  numbe r of 
 a lot)  be selected in a sample)  defectives  
 
 Up to 100   4    0 
 101-200 8   0 
 201 -300 12   1 
 301-400 16   3 
 401-500 20   3 
 501 and above  40   5 
 
5.4 The safety goggles  shall be selected at random from the lot and in order to ensure randomness of  
selection, random number tables may be used. As a first step, suitable number of packages (not less than 
10% of the total number in the lot subject to a minimum of 5) shall be chosen at random from each of the 
packages so chosen. An approximately equal nu mber of g oggles shall be picked at random so as to obtain 
the required number of g oggles for the sample. In case random number tables are not available, the 
procedure given in 5.4.1 may be adopted.  
 
5.4.1 Starting from any g oggle in the lot, count them as 1, 2, 3....up to rth and so in order, where r is the 
integral part of N/n (N being the lot size and n being the number of go ggles to be selected). Every rth goggle 
thus counted shall be withdrawn to give sample for inspection.  
 
5.4.2 Number of tests and cr iteria for conformity  
 
The go ggles selected in accordance with 5.4.1 shall be examined. The lot shall be considered as conforming 
to the requirements of this standard if the number of go ggles failing in any one or more of the requirements 
does not exceed t he permissible number given in Table 1 , Column 3 . 
 
6 Packaging and labeling  
 
6.1 Packaging  
 KS 2409-8: 2018 
 
3 Safety goggles s hall be individually packed in plastic bags . 
 
6.2 Labe lling 
 
The safety goggles package shall be legibly and indelibly marked with the following inf ormation in English 
and/or Kiswahili.  
 
a) manufacturer's name and address ; 
 
b) country of origin ;  
 
c) batch number ; 
 
d) date of manufacture and expiry date ; 
 
e) materials used;  
 
f) gross/net weight ; 
 
h) each package shall be clearly marked with number  per package .