ICS 71.100.40  
 
Reference number  
DRS 492: 202 2 
© RSB 202 2 
  
 RWANDA 
STANDARD  DRS  
492 
 
First edition  
2022-mm-dd 
 
Tile cleaner — Specification  
 
   
DRS  492: 202 2 
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 In order to match with technological development and to keep continuous progress in industries, 
standards are subject to periodic review. Users shall ascertain that they are in possession of the latest 
editio n 
 
 
 
 
 
 
 
 
© RSB 2021  
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized 
in any form or by any means, electronic or mechanical, including photocopying and microfilm, without 
prior written permission from R SB. 
Requests for permission to reproduce this document should be addressed to : 
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E-mail: info@rsb.gov.r w 
Website: www.rsb.gov.rw  
ePortal: www.portal.rsb.gov.rw   DRS  492: 202 2 
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 Contents  Page 
 
1 Scope  ................................ ................................ ................................ ................................ .............  1 
2 Normative references  ................................ ................................ ................................ ...................  1 
3 Terms and definitions  ................................ ................................ ................................ ..................  1 
4 Requirements  ................................ ................................ ................................ ................................  2 
4.1 General requirements  ................................ ................................ ................................ ..................  2 
4.2 Specif ic requirements  ................................ ................................ ................................ ..................  2 
5 Packaging and labelling ................................ ................................ ................................ ...............  2 
5.1 Packaging  ................................ ................................ ................................ ................................ ...... 2 
5.2 Labelling  ................................ ................................ ................................ ................................ ........  2 
6 Sampling  ................................ ................................ ................................ ................................ ....... 3 
 DRS  492: 202 2 
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    ©RSB 2021 - All rights reserved  
 Foreword   
Rwanda Standard s are prepared by Technical Committees and approved by Rwanda Standards Board (RSB) 
Board of Directors in  accordance with the procedures of RSB,  in compliance with Annex 3 of the WTO/TBT 
agreement on the preparation, adoption and application of standards.  
The main task of technical committees is to prepare national standards. Final Draft Rwanda Standards adop ted 
by technical committees are ratified  by members of RSB Board of Directors for publication and gazettment as 
Rwanda Standards.  
DRS 492 was prepared by Technical Committee RSB/TC 042, Surface active agents.  
Committee membership  
The following organization s were represented on the Technical Committee on Surface active agents  (RSB/TC 
042) in the preparation of this standard.  
University of Rwanda -College of Science and Technology (UR -CST)  
Rwanda Inspectorate, Competition and Consumer protection Authority (RI CA) 
Standards for Sustainability (SFS)  
ORIBUT Company Ltd  
Divine Hope Company Ltd  
UBURANGA Products Lt d 
Rwanda Standards Board (RSB) – Secretariat  
 DRS 492: 202 2 
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    ©RSB 2021 - All rights reserved  
 Tile cleaner — Specification  
1 Scope  
This Draft Rwanda Standard specifies the requirements, sampling and test methods for tile cleaner.  
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.  
RS EAS 847 -7, Cosmetics — Analytical methods — Part 7: Determination of specific gravity  
RS EAS 847 -17, Cosmetics — Analytical methods — Part 17: Determination o f pH 
RS ISO 3104, Petroleum products — Transparent and opaque liquids — Determination of kinematic viscosity 
and calculation of dynamic viscosity  
ASTM D5002 – 16, Standard Test Method for Density and Relative Density of Crude Oils by Digital Density 
Analyzer  
RS ISO 862 , Surface active agents — Vocabulary   
RS 278, Cosmetics — Methods of sampling  
3 Terms and definitions  
For the purposes of this standard the terms and definitions given in RS ISO 862 and the following apply.  
3.1 
tile cleaner  
product designed  for deep cleaning tiles and surfaces  in bathrooms exclusive  of products  specifically designed 
primarily to clean toilet bowls, toilet tanks or urinals.  
 DRS 492: 202 2 
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 4 Requirements  
4.1 General requirements  
4.1.1  The product shall be  a clear homogenous solution at room tem perature (25ºC ± 2ºC)  
4.1.2  The product shall be miscible in water in all proportions.  
4.1.3  When stored under normal conditions in sealed containers for a period equal to its shelf -life, the 
product shall remain stable and homogeneous, and shall remain free from obje ctionable odour.  
4.1.4  The product shall not affect tile surfaces when used as directed by the manufacturer.  
4.2 Specific requirements  
The product shall comply with the requirements given in Table 1, when tested in accordance with the methods  
described therein.  
Table 1 — Specific requirements for tile cleaner  
S/N Characteristic  Requirement  Test method  
i. A Specific gravity at 20°C, g/l, min  1.085  RS EAS 847 -7 
ii. B pH, max  1.5 RS EAS 847 -17 
iii.  Viscosity at 25°C, Cp  200-400 RS ISO 3104  
iv.  Relative density  1.01 ASTM D5002 – 16 
 
5 Packaging and labelling  
5.1 Packaging  
The product shall be packed in suitable containers that are securely closed, impervious to the product or shall 
not be corroded by the product, and shall be sufficiently strong to prevent contamination of the product arising 
from the ordinary risks of transportation, handling and storage.  
5.2 Labelling  
Each container shall be legibly and indelibly labelled with the following information:  
a) name of the product  
b) manufacturer’s name and physical address;  DRS 492: 202 2 
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 c) batch or code number;  
d) net content;  
e) country of origin;  
f) instructions for use;  
g) date of manufacture  and expiry  date; and  
h) precautionary notice marked in any official language with the following information:  
 i) the word 'CAUTION' shall be in a colour that contrasts with the surrounding for easy visibility and shall 
be followed with the statement, „READ LABEL BEFORE USE';  
ii) the following shall be marked immediately under i):  
• 'Keep Out of Reach of Children';  
• contains acid, the hazards involved and the necessary storage precautions to be used;   
• the product shall be used for the cleaning of tile surfaces only;  
• the product shall not be used with any other cleaning product;  
• the product shall be marked with  the following cautionary words and symbol : 
- “CORROSIVE ACID ” followed by the symbol,  
 
-  “POISON/DANGER ‟ followed by a skull and bones  
 
6 Sampling  
Sampling shall be conducted in accordance with RS 278.  
DRS 492: 202 2 
 
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