PUBLIC REVIEW DRAFT  DRAFT UGANDA STANDARD  
  DUS 1578 -2 
First Edition  
2014 -mm-dd 
 
 
 Reference number  
DUS 1578 -2: 2014  
© UNBS 2014   
  
Pillows for domestic use — Specification — Part 2: Plumage 
filled  
 PUBLIC REVIEW DRAFTDUS 1578 -2: 2014 
ii © UNBS 2014  – 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 application  
© UNBS 2014 
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: 256 414 505 995 
Fax: 256 414 286 123 
E-mail: unbs@infocom.co.ug  
Web: www.unbs.go.ug  PUBLIC REVIEW DRAFTDUS 1578-2:2014 
© UNBS 2014  – All rights reserved  iii 
 Contents Page 
Foreword ............................................................................................................................................................. v  
1 Scope  ................................ ................................................................ ................................ ...................... 1 
2 Normative references  ................................................................ ................................ ............................ 1 
3 Terms and definitions  ................................................................ ................................ ........................... 1 
4 Requirements for pillows  ................................ ................................................................ ..................... 2 
4.1 General  ................................ ................................ ................................................................ ................... 2 
4.2 Materials and components  ................................ ................................................................ ................... 2 
4.2.1  Casing fabric  ................................ ................................ ................................................................ .......... 2 
4.2.2  Plumage fillings  ................................ ................................ ................................ ..................................... 2 
4.2.3  Sewing thread  ................................ ................................ ................................................................ ........ 2 
4.3 Finished dimensions  ................................................................ ................................ ............................. 4 
4.4 Construction  ................................ ................................ ................................................................ .......... 4 
4.5 Stitches and seams  ................................................................ ................................ ............................... 4 
4.5.1  Stitches  ................................ ................................ ................................................................ ................... 4 
4.5.2  Seams  ................................ ................................ ................................................................ ..................... 4 
5 Packing and marking  ................................................................ ................................ ............................ 4 
5.1 Packing  ................................ ................................ ................................................................ ................... 4 
5.2 Marking  ................................ ................................ ................................................................ ................... 5 
5.2.1  Pillows  ................................ ................................ ................................................................ .................... 5 
5.2.2  Bulk containers  ................................ ................................ ................................ ...................................... 5 
Annex A  (normative)   Inspection  ................................ ................................................................ .................... 6 
A.1 Pillows  ................................ ................................ ................................................................ .................... 6 
A.2 Conditioning  ................................ ................................ ................................................................ .......... 6 
A.2.1  Pillows  ................................ ................................ ................................................................ .................... 6 
A.3 Finished dimensions  ................................................................ ................................ ............................. 6 
A.3.4  Check for compliance with 3.3  ................................ ................................................................ ............. 6 
A.4 Properties of casing fabrics  ................................ ................................................................ ................. 6 
A.4.1  Composition  ................................ ................................ ................................................................ ........... 6 
Annex B  (normative)   Mass per unit area of plumage filling  ................................................................ ........ 7 
B.1 Apparatus  ................................ ................................ ................................................................ ............... 7 
B.1.1  Table ................................ ................................................................ ................................ ....................... 7 
B.1.2  Pair of scissors or suitable cutter  ................................ ................................ ....................................... 7 
B.1.3  Metal plate  ................................ ................................ ................................................................ .............. 7 
B.1.4  Balance  ................................ ................................ ................................................................ ................... 7 
B.2 Procedure  ................................ ................................ ................................................................ ............... 7 
B.3 Calculation  ................................ ................................ ................................................................ ............. 7 
Annex C  (normative)   Determination of resistance to opening at seams  ................................ ................... 8 
D.1 Apparatus and materials  ................................................................ ................................ ...................... 8 
D.1.1  Sewing thread  ................................ ................................ ................................................................ ........ 8 
D.1.3  Sewing machine  ................................ ................................ ................................ .................................... 8 
D.1.4  CRE tensile-strength testing machine  ................................ ................................ ................................ 8 
D.1.5  Transparent template  ................................................................ ................................ ............................ 8 
D.2 Sampling and preparation of test specimens  ................................................................ .................... 8 
D.3 Procedure  ................................ ................................ ................................................................ ............... 9 
Annex D  (normative)   Determination of composition of plumage filling  ................................ .................. 10 
J.1 Apparatus  ................................ ................................ ................................................................ ............. 10 
J.1.1  Sample b ox ................................ ................................ ................................................................ .......... 10 
J.1.2  Beakers  ................................ ................................ ................................................................ ................. 10 PUBLIC REVIEW DRAFTDUS 1578 -2: 2014 
iv © UNBS 2014  – All rights reserved  
 J.1.3  Weighing bottle  ................................ ................................ ................................................................ ... 10 
J.1.4  Balance  ................................ ................................................................ ................................ ................ 10 
J.1.5  Sorting box  ................................ ................................................................ ................................ .......... 10 
J.1.6  Sorting bottle  ................................ ................................................................ ................................ ....... 10 
J.1.7  Tweezers  ................................ ................................................................ ................................ .............. 10 
J.2 Preparation of laboratory  ................................................................ ................................ ................... 10 
J.3 Preparation of test specimen  ................................................................ ................................ ............ 11 
J.4 Procedure  ................................ ................................................................ ................................ ............ 11 
J.5 Calculations  ................................ ................................................................ ................................ ......... 11 
 PUBLIC REVIEW DRAFTDUS 1578-2:2014 
© UNBS 2014  – All rights reserved  v 
 Foreword 
Uganda National Bureau of Standards (UNBS) is a parastatal under the Ministry of Tourism, Trade and 
Industry established under Cap 327, of the Laws of Uganda.  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/SPS Agreements 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 representatives of 
consumers, traders, academicians, manufacturers, government and other stakeholders. 
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 recommending the draft standards 
for approval and declaration as Uganda Standards by the National Standards Council. 
This standard has been developed by the Textiles and textile products ’ Technical Committee UNBS/TC 7.  
 
 PUBLIC REVIEW DRAFTPUBLIC REVIEW DRAFT DRAFT UGANDA STANDARD  DUS 1578 -2: 2014  
 
© UNBS 2014 – All rights reserved  1 
 Pillows for domestic use — Specification — Part 2: Plumage 
filled  
1 Scope 
This draft Uganda Standard specifies the requirements and methods of testing for plumage filled pillows for 
domestic use.  
2 Normative references 
The following referenced documents are indispensable for the application 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. 
FDUS ISO 139 Textiles -- Standard atmospheres for conditioning and testing  
US ISO 3758 , Textiles -- Care labelling code using symbols  
US ISO 105-E04: Textiles -- Tests for colour fastness -- Part E04: Colour fastness to perspiration 
US ISO 105-X12, Textiles — Tests for colour fastness  — Part X12 : Colour fastness to rubbing  
US ISO 105-D01, Textiles  — Tests for colour fastness  — Part D01 : Colour fastness to dry cleaning using 
perchloroethylene solvent 
US ISO 105-B02, Textiles — Tests for colour fastness  — Part B02 : Colour  fastness to artificial light  
US ISO 105-C10, Textiles — Tests for colour fastness  — Part C10 : Colour fastness to washing with soap or  
soap and soda  
US ISO 13934-1, Textile — Tensile properties of fabrics — Part 1: Determination of maximum force and 
elongation at maximum force using the strip method 
US ISO 1833-1 Textiles — Quantitative chemical analysis   
US ISO 4915, Textiles —Stitch types — Classification and Terminology 
US ISO 4916, Textiles —Seam types — Classification and Terminology 
3 Terms and definitions 
For the purposes of this standard, the following terms and definitions shall apply. 
3.1 
casing 
the textile fabric envelope that contains the filling PUBLIC REVIEW DRAFT 
2 © UNBS  2014  – All rights reserved  
 3.2 
filling filler 
the insulating material within the casing of a pillow 
3.3 
gauge (stitch-bond fabric) 
the number of row of stitches per 25 mm width of fabric 
3.4 
outer cover  
a textile fabric envelop that contains a pillow and that is easily removable for cleaning purposes 
4 Requirements for pillows 
4.1 General 
Pillows shall be — 
a) Cut and made with first-class workmanship throughout. 
b) Free from defects that could affect their appearance or their serviceability (or both). 
c) Made such that all seams are smooth and all sewing is free from twists, pleats and puckers and 
sufficiently extensible to prevent seam-cracking and undue shrinkage in use. 
d) Made such that all ends of sewing have been trimmed and loose threads removed. 
e) Made such that ends of sewing that are not secured in seams or in other sewing are adequately 
backstitched. 
f) Made of uniform colour and finish. 
g) Capable of being cleaned in accordance with the care instructions, without giving rise to any defect, 
such as puckering, lumpiness, tears, etc. 
h) Delivered in a clean and commercially dry condition. 
4.2 Materials and components 
4.2.1  Casing fabric 
The casing fabric shall be a woven fabric that complies with the appropriate requirements given in Table 1. 
4.2.2 Plumage fillings 
The plumage shall, when tested in accordance with Annex D consist entirely of clean, crimped continuous 
filaments or staple synthetic fibres. The length of staple fibres shall be at least 30 mm (A.3 ). The fibres shall 
be thermo-bonded or resin-bonded and the blend of melting fibres shall not exceed 30%. 
4.2.3  Sewing thread 
The sewing thread shall have a minimum breaking strength of 8 N. PUBLIC REVIEW DRAFTDUS 1578-2: 2014 
© UNBS 2014  – All rights reserved  3 
 Table 1 — Casing fabric requirements 
1 2 3 
Property  Requirements  Test methods  
Fibre composition, %  Shall comply with the stated  
composition a) US ISO 1833 -1 
Breaking strength N, min.  
Warp  
Weft 
  
 
350 
200  
US ISO 13934 -1 
Resistance to opening at seams N, min.  65 Annex C 
Colour fastness to:  
a) light, rating, min.  
b) Dry-cleaningb) 
 Change in colour, rating, 
min. 
 Staining of transfer cloths, 
rating, min.  
c) c) Washing  
 Change in colour, rating, min.  
 Staining of transfer cloths, 
rating, min.  
d) Rubbing  
 Dry rating, min.  
 Wet, rating, min.  
e) Perspiration  
 Acid, rating, min.  
 Alkali, rating, min   
4  
US ISO 105 -B02 
 
 
4 
 
 
4  
 
 
US ISO 105 -D01 
 
 
4 
 
4 US ISO 105 -C10 
 
 
4 
 
3 US ISO 105 -X12 
 
 
4 
 
4 US ISO 105 -E04 
a As stated on the label (see 5.2.1 c)), subject to tolerance of ± 3 % of the indicated value in the case of blended 
fabrics.  
b) Applicable only as indicated by the car e instructions (see 5.2.1d)).  
 
 
 PUBLIC REVIEW DRAFT 
4 © UNBS  2014  – All rights reserved  
 4.3 Finished dimensions 
Unless otherwise specified, the dimensions of the made-up pillow shall be one of the combinations given in 
the table below, Columns 2 and 3. 
1 2 3 
Pillow size  Dimensions, cm ± 3% 
Width  Length  
Medium  45 70 
Large 80 80 
 
4.4 Construction 
A pillow shall consist of a casing made from one piece of fabric (or from two equally sized pieces of fabric) 
enclosing a plumage filling. The mass of a down filling shall be at least 1 450 g/m2 and that of a feather filling 
at least 3 200 g/m2 determined in accordance with Annex B. 
4.5 Stitches and seams 
4.5.1  Stitches 
Stitches shall comply with the following requirements according to US ISO 4915  
a) Stitch type: 
1) binding: stitch type 301 or 401; 
2) edge-overlocking: stitch type 505 or 502; and 
3) all other stitching: stitch type 301; and 
b) number of stitches per 10 cm: at least 24 per 10 cm. 
4.5.2  Seams 
Seams shall comply with the following requirements  according to US ISO 4916  
a) General: Edge-over locked closing seams of seam type SSn-1 shall be of width of at least 4 mm. All 
other seams shall be of width at least 8 mm. 
b) Seam type: Seam types shall be as follows; 
1) Closing seams: Seam type SSc-a, BSc-1, SSa-1, SSav-2 or SSn- 1. 
2) Wall seams : Seam type SSc- 1. 
5 Packing and marking 
5.1 Packing 
Pillows shall be wrapped individually in a wrapper and then packed in a suitable bulk container. Unless the 
quantities ordered are such that packing of the same colour of casing and dimensions is not justified, only PUBLIC REVIEW DRAFTDUS 1578-2: 2014 
© UNBS 2014  – All rights reserved  5 
 pillows of the same colour of casing and dimensions and that contain the same type of filling shall be packed 
together in a bulk container. 
5.2 Marking 
5.2.1  Pillows 
The following information shall appear in legible and indelible marking on label securely attached to an edge 
of, or on top (near one of the corners) of each pillow: 
a) the manufacturer’s name or trademark or both;  
b) the dimensions, in centimetres; 
c) the composition of the casing fabric and of the filling; 
d) care instruction shall be in accordance to US ISO 3758; 
e) country of origin 
5.2.2 Bulk containers 
The following information shall appear in legible and indelible marking on the outside of each bulk container. 
a) the information required in 5.2.1; 
b) a description of the contents; 
c) the quantity of pillows. 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 PUBLIC REVIEW DRAFT 
6 © UNBS  2014  – All rights reserved  
 Annex A  
(normative )  
 
Inspection 
A.1 Pillows 
After checking for compliance with the relevant requirements given in Clause 4, visually examine each pillow 
in the sample for compliance with the requirements of clause 5.2.1 
A.2 Conditioning 
The fabric should be conditioned according to FDUS ISO 139. 
A.2.1 Pillows 
After carrying out the test given in Clause A.3, cut from the samples the test specimens required for the test 
given in Annex B In the case of the casing fabric, cut from the sample (see Note Clause A.4) the test 
specimens required for the test given in Clause A.4 
A.3 Finished dimensions 
A.3.1  Lay the pillow flat on a plain surface. Gently pat the pillow (without subjecting it to tension) with the 
hands until it is free from all storage folds and wrinkles. 
A.3.2 Use an accurately graduated steel tape of length greater than the length of the pillow to determine, to 
the nearest 1cm, at approximately three equal intervals in each direction, the width and the length of the 
pillow. 
A.3.3 Calculate the arithmetic mean of each set of measurements and record the results as the width and 
the length, respectively, of the pillow. 
A.3.4 Check for compliance with 3.3 
A.4 Properties of casing fabrics 
NOTE:  Testing for compliance with the fabric requirements given in Table 1 requires a length of at least 1 m, full 
width, of the casing fabric. 
A.4.1 Composition 
Determine the composition of casing fabrics by chemical analysis in accordance to US ISO 1833-1. 
 
 
 
 PUBLIC REVIEW DRAFTDUS 1578-2: 2014 
© UNBS 2014  – All rights reserved  7 
 Annex B  
(normative )  
 
Mass per unit area of plumage filling 
B.1 Apparatus 
B.1.1 Table  
That has a smooth flat surface and is of a size that exceeds that of the fabric to be measured. 
B.1.2 Pair of scissors or suitable cutter 
That is capable of cutting a square or circular specimen of area 0.01 m2 to an accuracy of 1 % or better. 
B.1.3 Metal plate 
That is 5 mm smaller than the cutter and that has a thickness of 10 mm. 
B.1.4 Balance 
That is capable of determining the mass of the specimen to accuracy of 0.2 % or in the case of 0.01 m2 
specimens, to an accuracy of 0.001 g 
B.2 Procedure 
B.2.1 Ensure that the fabric, which should preferably be selected from the middle of a piece, is not less than 
0.5 m and not more than 4 m long, and lay it flat, and without tension, on the table. Cut at both ends, across 
the full width of the sample, along parallel lines at right angles to the selvedge. If the mass per unit area of a 
selvedge on a full-width piece appears to deviate appreciably from the mass per unit area of the body of the 
fabric, or if so agreed upon between the parties concerned, trim off the selvedge along the outermost threads 
of the body of the fabric and use only the body of the fabric for the determination of the mass per unit area. 
Measure the width and length of the specimen.  
B.2.2 Use the balance to determine the mass of the specimen. 
B.3 Calculation 
Calculate the mass per unit area of the plumage filling (Mf), in grams per square metre, using the 
following formula.  
 
Mf = A – 2B 
where 
A is the mass per unit area of the pillow, in grams per square metre, 
B is the mass per unit area of the casing fabric, in grams per square metre. 
 PUBLIC REVIEW DRAFT 
8 © UNBS  2014  – All rights reserved  
 Annex C  
(normative )  
 
Determination of resistance to opening at seams 
D.1 Apparatus and materials 
D.1.1 Sewing thread  
Core-spun with a polyester core and cotton sheath of ticket No. 80 and ticket No. 50 (see Table D.1) 
Table D.1 — Requirements for stitching 
1 2 3 4 
Mass per area of test  
specimen g/m2  Sewing thread ticket No.  Sewing machine needle  
size Metric (imperial)  Stitch rating Number  
of stitches per 10cm  
< 250  80 90 (No. 14)  50 ± 2  
≥ 250  50 100 (No. 16)  40 ± 2  
 
D.1.2 Sewing machine needles of size 90 (No. 14) and size 100 (No. 16 ) 
Examine the points of the sewing machine needle for signs of damage. 
D.1.3 Sewing machine  
Electrically operated, single-needle, lock-stitch, capable of producing stitch type 301 and provided with the 
appropriate throat-plate(s) and feed-dog(s) for use with the sewing threads  
D.1.4 CRE tensile-strength testing machine 
That is capable of constant rate of extension of 100mm/min, fitted with jaws. 
D.1.4.1 Of a type that will not weaken the test specimen during test and such that each jaw has a front 
face of size 25 mm x 25 mm and a back face of size at least 25 mm x 40 mm. the longer dimension being at 
right angles to the direction of the applied load. 
D.1.5 Transparent template 
Of size approximately 125 mm x 30 mm ruled with three lengthways and parallel lines, the clear distance 
between adjacent lines being 3 mm ± 0.05 mm. 
D.2 Sampling and preparation of test specimens 
D.2.1 Take a laboratory sample as specified in the relevant product specification. 
D.2.2 From the conditioned laboratory sample cut 10 test specimens, each of approximately 200 mm x 75 
mm, so that in five the test specimens the longitudinal yarns are warp yarns and in the other five test 
specimens the longitudinal yarns are weft yarns. PUBLIC REVIEW DRAFTDUS 1578-2: 2014 
© UNBS 2014  – All rights reserved  9 
 D.2.4 Cut the two sets of test specimens so that their longitudinal yarns all represent different threads and, if 
possible different portions of the warp and the weft respectively. Do not cut any warp-direction test specim en 
close to a selvedge than 8 mm. 
D.2.5 Select the sewing thread and the sewing machine needle size appropriate to the mass per area of the 
test specimen (see Table D.1) and fit the corresponding throat-plate and feed dog to the sewing machine. 
D. 2.6 Fold each test specimen in half by placing the two shorter ends together and while maintaining a 
constantly sewing speed, sew a row of stitches parallel to and at a distance of 15 mm from the fold at the 
stitch rating (see Table D.1) appropriate the mass per area of the test specimen. 
D.2.7 Cut each test specimen on the fold and parallel to the line of stitching so as to provide a seam of width 
approximately 1 mm. 
D.3 Procedure 
D.3.1 Clamp a test specimen symmetrically in the jaws of the CRE tensile-strength testing machine with the 
seam midway between and parallel to the edges of the jaws so that the free distance between the jaws at the 
start of the test is 75 mm. 
D.3.2 Hold the transparent template in front of the clamped test specimen so that its centre line is parallel to 
the line of stitching at the seam of the clamped test specimen and set the CRE tensile-strength testing 
machine in motion. 
D.3.3 Stop the CRE tensile-strength testing machine and record the load, in newtons, when; 
D.3.3.1 Any part of the opening of the seam reaches a width of 6 mm (reduced to 32 mm in the case of 
test specimens that have warp threads and weft threads of contrasting colours),or 
D.3.3.2 A failure owing to the breakdown of the fabric or sewing thread occurs, whichever occurs first. 
D.4 Repeat D 3.1 to D. 3.3 (inclusive) until all 10 test specimens have been tested. PUBLIC REVIEW DRAFT 
10 © UNBS  2014  – All rights reserved  
 Annex D  
(normative )  
 
Determination of composition of plumage filling 
J.1 Apparatus 
J.1.1 Sample box 
A box that has a solid base and wire gauze sides and top, and that is size such that a sample, of mass 
approximately 200 g, of the plumage under test will not occupy more than 75 % of the volume of the box. 
NOTE:  A wire gauze with an aperture size not exceeding 600 μm is recommended.  
J.1.2 Beakers 
Twenty beakers (glass or polyethylene) of size such that a 10 g portion of the laboratory sample will not 
occupy more than approximately 75 % of the volume of a beaker. 
J.1.3 Weighing bottle 
A tared stoppered bottle (glass or polyethylene) capable of holding a test specimen, of mass approximately 5 
g, of the plumage under test 
J.1.4 Balance 
An analytical balance with a resolution of 0,001 g or better 
J.1.5 Sorting box 
 A box of the shape and dimensions shown in Figure J.1 and that has a hinged clearglass lid and two 
openings in the front panel. 
J.1.6 Sorting bottle 
 Tared stoppered weighing bottles of diameter approximately 40 mm and of height approximately 75mm, and 
on each of which the mass of the bottle is marked. 
J.1.7 Tweezers 
two suitable pairs of tweezers. 
J.2 Preparation of laboratory 
From widely scattered positions in the filling or, when relevant, in the plumage-filled article under test, take 
enough increments, of approximately equal size, to provide a laboratory sample of plumage of mass 
approximately 150 g. 
Mix the laboratory sample thoroughly by hand twice a day during conditioning, ensuring that there is little loss 
of the plumage as possible. PUBLIC REVIEW DRAFTDUS 1578-2: 2014 
© UNBS 2014  – All rights reserved  11 
 J.3 Preparation of test specimen 
Divide the laboratory sample in the sample box into 20 portions of approximately equal bulk, and place one 
portion in each of the beakers. 
From each of the beakers in turn, take a small portion of plumage and transfer it into the weighing bottle. 
Continue this procedure until the mass of the test specimen so obtained is approximately 5 g. Determine and 
record the mass of the test specimen to the nearest 0.001 g. When obtaining the test specimen, ensure that 
each portion of plumage obtained from the beakers includes a proportional amount, by mass, of the feather 
fibre, down fibre, and residual matter present in the laboratory sample. 
J.4 Procedure 
J.4.1  Transfer the weighing bottle into the sorting box, and arrange, at the back of the box, enough sorting 
bottles to provide a separate sorting bottle for each of the constituents (i.e. fibres and residual matter) present 
(using the same sorting bottle for feather fibre and down fibre), and close the lid of the box. 
J.4.2  Operating through the hand-holes in the front of the box, use the tweezers to separate the plumage in 
the weighing bottle into its constituents, collecting each constituent in the appropriate sorting bottle. 
J.4.3  After the whole of the test specimen has been separated into its constituents, replace the stoppers of 
the sorting bottles, remove the sorting bottles from the sorting box, and determine, to the nearest 0.001 g, the 
mass of each constituent. 
J.5 Calculations 
J.5.1  Determine the percentage of the mass fraction of the fibre (F) as follows: 
F =
100
12mm  
where 
m2 is the mass of the fibre, in g; 
m1 is the mass of the test specimen, in g. 
J.5.2  Determine the percentage of the mass fraction of the residual matter (R) as follows: 
R =
100
13mm  
where 
m3 is the mass of the residual matter, in grams: 
m1 the mass of the test specimen, in grams 
J.5.3  Determine  the percentage of the mass fraction of the composition of the plumage filling (C) (free from  
fibre and residual matter) by calculating the percentage content o f each  constituent (for example down 
feathers,  goose down, duck down and waterfowl feathers) as follows:  PUBLIC REVIEW DRAFT 
12 © UNBS  2014  – All rights reserved  
 C= 
100
3 2 14 mmmm  
 
where 
m4 is the mass of the constituent, in grams; 
m1 is the mass of the test specimen, in grams; 
m2 is the mass of the fibre, in grams; 
m3 is the mass of  the residual matter, in grams 
 PUBLIC REVIEW DRAFTDUS 1578-2: 2014 
© UNBS 2014 – All rights reserved  13 
 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 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.  
 
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Price based o n nn pages 
© UNBS 2014 – All rights reserved