DRAFT UGANDA STANDARD  
  DUS 2236  
First Edition  
2020 -mm-dd 
 
 
 Reference number  
DUS 2236:2020   
© UNBS 2020   
  
Rubber squeezer  (squeegee)  — Specification   
 DUS 2236: 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 corr ect application  
© UNBS  2019   
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 
permi ssion 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 2236:2020  
© 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 mandat ed 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 go vernment, 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 befor e recommending 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 /TC303, Plastics and Related 
Products  
 DRAFT UGANDA STANDARD  DUS 2236: 2020  
 
© UNBS  2020  – All rights reserved  1 
 Rubber S queezer  (squeegee)  — Specification  
1 Scope   
This Draft Uganda Standard prescribes the requirements , methods of sampling and test for  hand operated  
squeezer  for floors  and windows . . 
2 Normative reference  
There are no normative references in this document.  
3 Terms  and definitions  
For the purposes of this document, the following 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  for the purposes of this document, the following 
terms and definitions apply.  
3.1  
plastic  
solid material which contains, as an essential ingredient, one or more synthetic organic high polymers and 
which is formed (shaped) d uring either manufacture of the polymer or the fabrication into a finished product by 
heat and/or pressure  
3.2  
wood 
aggregate of secondary tissues  found in stems, branches and roots of woody plants between the bark and 
pith 
3.3 
rubber  
natural or synthetic  elastic polymer (elastomer) which forms the basis of the compound used in many rubber 
products  
3.4  
lot 
definite quantity o f squeezers  manufactured or produced under conditions that are presumed uniform  
3.5  
block 
part to whi ch the filling material “blade ” is secur ed 
3.6 
Squeezer /squeegee  
tool with a flat, smoo th blade , used to remove or control the flow of liquid on a flat surface.   
2 © UNBS  2020  – All rights reserved  
 3.7  
groove  
long, narrow,  hollow space cut into a block  where the blade  sheet is att ached  
3.8 
blade   
wiping tool /rubber sheet  placed in the groove of the block  
3.9 
Consignment  
quantity of squeezers  of the same specifications made available for dispatch at the same time  
4 Requirements  
4.1 General requirement s 
4.1.1 The rubber squeezer  shall have smooth finish and all the  componen ts (block, blade  and handle) shall 
be free from imperfections and defects which might affect the appearance , impai r its serviceability  or 
performance.  
4.1.2 Plastic components shall be made of  plastic which does not significantly deflect while  the squeezer  is 
in use  
4.1.3  Wooden components  shall be free from brashness, any biological or non -biological deterioration, 
insect attack, pith , knots (except pin knots), cracks and any other defect that may reduce the life of the brush 
and affect its utility.  
4.1 4 Handle  
4.1.4.1 The handle shall be made of a suitable material. It shall be free from any defects and shall not 
deflect during use It may be plastic, wood or metal  
4.1.4.2 The handle sh all fit firmly in the block  and shall not come out during use  
4.1.4.3 Straight -grained hardw ood, painted or vanished  shall be used  for wooden  handles . 
4.1.4.4 Metallic  handle s shall be insulated.  
4.1.5 Blade  
The blade s hall pass  the tests given in clause 4.1.5.1  and 4.1.5. 2 
4.1.5.1  Pull test  
The rubber sheet shall remain unmo vable inside the block and shall not come out when subjected to a straight 
push and pull with thumb and finger grip.  
4.1.5.2  Flexibility test 
The rubber sheet when bent at an angle of 180” shall show no crack split or break in the sheet. And on 
releasing t he pressure while in bent, the sheet shall assume its normal shape.  
4.1.5.3 The rubber sheet  shall be of  uniform size and len gth, virtually free from damage  and shall be 
firmly secured in the block .  DUS 2236: 2020  
© UNBS 2020  – All rights reserved  3 
 4.1.5.3 The squeezer shall be able to dry the wet surfac e when used in both the forward (push) and 
backward (pull) directions  
4.1.5.4. The Squeezer blade shall  at all times, maintain firm  contact with the floor when pressure is 
applied o n the handle  
4.2 Specific requirements  
4.2.1 Moisture  content  for wooden bl ock and handle, shall be  determined in accordance with Annex A, shall 
not exceed 15  %. 
4.2.2 When metal is used as any of  the components of the squeezer , it shall be corrosion -resistant or shall  
be protected against corrosion  when tested in accordance with  Annex B .  
4.2.3 The squeezer shall comply with the minimum dimensions given in the table 1  
Table 1 — Minimum dimensions for specific parts of the floor squeezer  
Specific part of the squeezer  Dimensions , (mm) 
Handle length  1500 
Rubber length  300 
Groove length  300 
Rubber protrusion from the groove  15 
 
5 Labelling  
The squeezer  or its package shall be legibly and indelibly marked or stamped  with the following : 
a) Name of product as ‘squeezer;  or “squeegee”  
b) Name and  physical  address of manufacturer;  
c) Date of m anufacture;  
d) Batch number and  
e) Country of origin . 
6 Packaging  
The pack aging shall be as agreed between the purchaser a nd the su pplier 
7 Sampling  
The metho d of sampling of squeezer s and criteria for conformity shall be as prescribed in Annex C.  
4 © UNBS  2020  – All rights reserved  
 Annex  A 
(norma tive) 
 
Determination of Moisture Content of Wood en squee zers  
A.1 Test 
The entire block  or handle  used in the squee zer, may form the test specimen for the determination of 
moisture content or apiece cut from the test specimen may  as well, be used for moist ure content 
determination.  When for any reason additional determination of moisture content is required, separate 
samples shall be prepare d from the sample material as  used in preparing the test specimens. Smaller 
specimens may be used when deemed necessar y. The test shall be carried out immediately after cutting 
the specimen . 
A.2 Procedure  
A.2.1  Weigh accurately each test specimen.  
A.2.2  Dry the specimen in a ventilated oven at 105 °C ± 2 °C until the weig ht becomes constant between 
two successive weighti ngs made at an interval of not less than one hour.  
A.3 Calculation  
The moisture content, expressed as a percentage of the oven -dry weight  
 
where  
W1 is initial mass  in g of the test specimen  
W0 is oven dry  mass  in g of the test specimen  
. DUS 2236: 2020  
© UNBS 2020  – All rights reserved  5 
 Annex  B 
(normativ e) 
 
Determination of Corrosion Resistance  
B.1 Procedure  
Submerge all metal components for 7 h in distilled water, then dry them as rapidly as possible at a 
temperature not exceeding 70 °C and examine the su rfaces that are required to be corrosion resistant for 
freedom from corros ion.  
B.2 Results  
The surfaces shall show no sign of corrosion  
  
6 © UNBS  2020  – All rights reserved  
 Annex  C 
(normative ) 
 
Sampling and Criteria for Conformity  
C.1 Samples for app roval  
C.1.1 The supplier shall submit three identical brushes corresponding to each type and size for approval.  
C.1.2 The purchaser or inspection authority, as applicable, shall retain one of the three samples.  
C.2 Scale of sampling  
C.2.1 In any consignme nt, all squeezer s of the same size, construction and method of manufacture shall be 
grouped to constitute a  lot. 
C.2.2 Each lot shall be tested separately for its conformity to the requirements of this spec ification. The 
number of squeezers  to be selected for this purpose from each lot depends on the size of the lot and shall be 
in accordance with  Table C1 
Table  C1 – Scale of Sampling and Permissible Number of Defectives  
 
Lot size  For visual and dimensional tests  
No. of squeezers  to be 
Selected  Permissibl e No. of  
Defectives  
0 to 25  3 0 
26 to 50  5 0 
51 to 100  8 1 
101 to 300  13 1 
301 and above  20 2 
NOTE  :The plan in this table provides for  the acceptance of a lot containing not more than 4 % defective 
squeegees  most of the times  
 
C.2.3 The squeezers  shall be selected at random. To ensure this, a random number  on the  table may be 
used. Alternately, the following procedure ma y be adopted: Arrange the squeezers  in order, count them as 1, 
2, up to r and so on where r is the integral part of N/n (N being t he lot size and n being the sample size). 
Repeating this process, every rth broom shall be withdrawn to constitute the sample.  
C.3  Number of tests and criteria for conformity  
C.3.1  The squeezers selected according to C.2.3 shall be examin ed for the quali ties in clause 4. The 
number of defective squeezers  in the sample shall  not exceed the corresponding permissible number of 
defec tives given in col umn 3 of Table C1 if the lot is to be accepted in respect of these  requirements  DUS 2236: 2020  
© UNBS 2020  – All rights reserved  7 
 C.3.2  One test per 10 brushes  or part thereof shall be conducted for the determination of moisture content 
of timber in the  case of wooden squeezers . 
C.3.3 for pull test and flexibility tests, two brushes from the sample shall be tes ted individually.  
C.3.4 there shall be no failure in  the t ests conducted  in clause 5  if the lot is to be finally accepted as 
satisfactory.   
8 © UNBS  2020  – All rights reserved  
 Bibliography  
[1]  IS 13348:1992,  Brush,  rubber squeezer with handle  
[2] TBS/ CDC 18 (4992) P3 – Wet Mops – Specification (Revision of TZS 1097:2010)  
 
  CDUS 2236: 2019  
© UNBS  2020  – All rights reserved  9 
 Certification ma rking  
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 Certification 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 with 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 Standards.  
 
 CDUS 2236: 2019    
 
ICS 97.180  
Price based on nn pages  
© UNBS 2019 – All rights reserved