tbs              TDC2(5623 )P3 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Draft  
Tanzania Standard  
Textiles – Warp and Weft Knitted  Fabrics – Specification s 
 
(Second edition)  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
TANZANIA BUREAU OF STANDARDS  
 
1 
 0. FOREWORD  
 
0.1 Knitted  fabrics  are textile products which results from knitting process with distinct properties 
from woven  fabric which are  more flexible and can readily be constructed into smaller pieces, making it 
ideal for t -shirts, socks and other related products . 
 
0.2 In developing  this Draft Tanzania Standard 2nd edition  improvement have been made in Title of the 
Draft Tanzania Standard , that is Warp and Weft Knitted have been added , improvement have been made 
also in  Clauses 0, 1, 3, 4 and Table 2. 
 
This second edition cancels and replaces the first edition which was developed in year  – 2003  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
2 
 Tanzania Bureau o f Standards  
Draft Tanzania Standard                  TDC2 (5623 )P3 
Textiles – Warp and Weft Knitted F abrics – Specification s 
 
1. SCOPE  
1.1 This Draft  Tanzania Standard specifies the requirements for Warp and Weft Knitted F abric s suitable 
for apparel purposes.  
 
1.2 These requirements apply to the length and width directions for those properties where fabric 
direction is pertinent.  
 
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:  
 
TZS 23:  Textiles – Tests for colour fastness – Colour fastness to artificial light (Xenon arc) . 
 
TZS 26:  Textiles – Determination of conductivity, pH, water soluble matter, chloride and sulphate 
in aqueous extracts . 
 
TZS 27: Textiles – Determination of dimensional change of fabric – cold water immersion . 
 
TZS 44:  Textile s– Method for determination of length and widt h of woven or knitted fabrics . 
 
TZS 138: Textiles – Tests for colour fastne ss – colour fastness to rubbing.  
 
TZS 167: Textiles – Tests for colour Fastness – Colour fastness to  washing – Test 3. 
 
TZS 280:  Textiles – Tests for colour fastness – colour fastness to perspiration . 
 
TZS 327:  Textiles  – Binary fibre mixtures – quantitative chemical analysis . 
 
TZS 692:  Textiles – Guide for care – labelling of textiles fo r laundering and dry – cleaning . 
  
3. TERM S AND DEFINITIONS  
For the purpose of this Draft Tanzania Standard the following  terms and  definitions shall apply.  
 
3.1 Knitting  
fabric formation by intermeshing (interlacement) of loops of yarns horizontally or vertically to the axis of 
the fabric.  
 
3.2 Knitted fabric  
textile that results from  knitting. Its properties are distinct from woven  fabric  in that it is more flexible and 
can be more readily constructed into smaller  pattern  pieces . 
 
3.3 Colour fastness  
term – used in the dyeing of textile materials – that characterizes a material's  colour's resistance to fading 
or running. The term is usually used in the context of clothes.  
 
3.4 Perspiration Fastness  
ability not to fade and not to stain when dyed , printed or bleached  fabric is perspired .  
3 
 3.5 Warp knitted fabric  
fabric formed where the loops made from each warp thread are formed substantially along the length of 
the fabric.  
 
3.6 Weft knitted fabric  
fabric formed where the loops made by each weft thread are formed substantially across the width of the 
fabric.  
 
4. REQUIREMENTS  
 
4.1 General  – The fabric shall be evenly knitted and reasonably free from mends, ladders, dropped 
stitches, holes, cuts etc.  The fabric shall be of uniform make, width, colour and finish.  
 
4.2 Composition  – When tested in accordance  with TZS 327:  the fabric shall co nsist of any fibre 
composition or as agreed between the buyer and manufacturer . 
 
4.3 Width  – The width of the fabric when measured  in accordance with TZS 44:  shall be as declar ed, 
subject to a tolerance of ± 3%. 
 
4.4 Length  – The length of the fabric when m easured in accordance with TZS 44: shall be as declared 
subject to a tolerance of ±1% . 
 
4.5 Colour fastness  – The colou r fastness ratings of coloured fabric shall comply with the requirements 
specified in Table 1.  
 
Table 1 – Colour fastness requirements and other particulars  
 
Colour fastness to  Numerical ratings   
 
Method of test  Change in colour  Staining  
 
a) Light  
 
b) Washing  
 
c) Perspiration  
 
d) Rubbing  
i)    Dry  
ii)   wet   
4 or better  
 
3 or better  
 
4 or better  
 
 
4or better  
3 or better   
3 or better  
 
4 or better  
 
4 or better  
 
 
3 or better  
  
TZS  23:  
 
TZS 167 : 
 
TZS 280:  
 
 
TZS 138:  
 
 
Table 2 -  Other requirements of knitted fabric  
 
 
Characteristics   
Requirement   
Method of test  
pH value  6 – 8.0 TZS 26:  
Dimensional changes % max .in 
each direction   
±5%  
TZS 27: 
 
Mass, g/m2 Shall be as decl ared subject to a 
tolerance of ± 5%.  
TZS 21:  
 
 
Dye properties   
None carcinogenic  
None allergenic   
TZS 2007 -2:  
4 
 5. PACKING AND MARKING  
 
5.1 Packing  – The fabric shall be supplied in clean and dry state.  It shall be packed  in a package 
protecting it from dust and dirt.  
 
5.2 Marking – The following information shall be legible and indelibly marked on a label attached 
securely to the outer top layer of each piece . 
 
i) fabric  (%) composition , 
ii) manufacturer's name, address and/or trade mark,  
iii) length in metres,  
iv) width in centimetres , 
v) labelling and care instructions : and  
vi) country of origin . 
 
Buyer and seller shall agree upon acceptable quality levels and scale of sampling for inspection and 
testing shall be sufficiently adequate to ensure conformity to this agreed quality level.  
 
 
6. SAMPLING  
 
6.1 Lot  
The quantity of the same type and quality delivered to one buyer against one dispatch note shall 
constitute a lot.  
 
6.2 The conformity of the lot to the requirements of this Draft Tanzania Standard shall be determined on 
the basis of tests carried out on the samples selected from the lot.  
 
6.3 Unless otherwise agreed upon between the buyer and the manufacturer, the number of pieces to be 
selected at random from a l ot shall be in acc ordance with T able 3. 
 
Table 3 – Sampling size and permissible number of non -conforming pieces  
 
Number of pieces  
in the lot  Sample size (No. of 
pieces to be 
selected)  Permissible no. Non -
conforming pieces  Sub-sample size (No. 
of pieces to be 
selected)  
 
Up   to 25  
26   to 50  
51   to 150  
151 to 300  
301 to 500  
501 to  1000  
1000 and above   
3 
5 
8 
13 
20 
32 
50  
0 
0 
0 
1 
1 
2 
3  
2 
2 
3 
3 
5 
5 
8