Sigma is a fully-fledged internationally accredited ISO / IEC 17025:2005 testing laboratory delivering broad range of textile testing services on Colorfastness, Dimensional Stability, Appearance Testing, Fabric Construction, Flammability Testing plus much more.
the present competitive scenario consumer paid more attention on the quality
of fiber, irrespective of the cost. Hence, there is need of not only stylish
but also well made fibers that are free from hazardous substances.
Owing to advanced analytical instruments and experienced technicians, our
facility is supposed to execute various tests related to textile industry in
an efficient manner in compliance with National & International Testing
Standards & Specifications.
Following are the Testing Parameters:
This is the maximum force require to break the
fabric in Newton
Test Method:- IS: 1969 - 2009.
The elongation test measures the percentage difference
between the stretched length and the initial length of the specimen
Test Method:- IS: 1969 - 2009.
Tear resistance is the force in Newton that is
required to tear a specimen.
Test Method: IS: 6489 - 1993.
The bursting strength is the maximum fluid
pressure that is applied to a circular specimen for distending it to
Test Method: IS: 1966 - 1975.
The flammability of a material is the pertinence to
the relative ease of ignition the ability to sustain combustion.
Test Method: IS: 11871 - 1986.
MASS PER UNIT AREA:-
The mass per unit area is defined as the mass
in gram of 1 square mtr of fabric
Test Method: IS: 1964 - 2001.
The thread count is the number of thread in per unit
length of fabric.
Test Method: IS: 1963 - 1981.
DIMENSIONAL CHANGE OF FABRIC:-
The dimensional change in fabric is
described as the change in dimensions of fabric when it is soaked in water
under specified conditions in correspondence with the dimensions before
soaking in water.
Test Method: IS: 1313 - 1984.
DIMENSIONAL CHANGE OF FABRIC (other than wool):-
All the fabrics,
weather woven or knitted changes their dimensions while soaked in water.
Test Method: IS: 2977 - 1989.
Test Method: IS: 1315 - 1977.
- Cotton Count System - Linear density of cotton yarn is
expressed as 768.1m hanks per 453.6 gm.
- Tex System - It can be defined as the mass in gram of 1
kilometer of yarn.
CRIMP suggest the percentage difference between the yarn's
straightened length and the length of yarn while in the cloth.
Test Method: IS: 3442 - 1980.
The twist is defined as the number of turns around the axis
of yarn based on its nominal gauge length before untwisting. It is expressed
as the turn per meter.
Test Method: IS: 832 - 2011.
The color fastness is measured as change in color
in the treated fabric in compare to original fabric.
Type of Colour Fastness
Test Method: IS: 762 - 1988.
IDENTIFICATION OF FIBRES:-
- Colour Fastness to Daylight:- The sample is exposed to
sunlight under certain conditions using standard patterns.
Test Method: IS: 686 - 1985 & IS: 2454 - 1967.
- Colour Fastness to Washing:- The fabrics are tested under
certain conditions of time, temperature or soap.
Test Method: IS/ISO: 105 - C 10: 2006.
- Colour Fastness to Organic Solvent:-The fabric is tested in
organic solvent under certain specified conditions.
Test Method: 688 - 1988.
- Colour Fastness to Perspiration:- The fabric is tested with 2
different solutions containing histidine. Then drained and placed
between two plates under a specified pressure in testing device.
Test Method: IS: 971 - 1983.
- Colour Fastness to Bleaching:- The fabric is tested in Sodium
Hypochloride and is then rinsed with water. Then is tested in
Hydrogenperoxide solution and rinsed and dried.
The behavior of textile is predicted by
fiber identification under different environmental conditions.
Test Method: IS: 667 - 1981.
The blend composition is carried out to find the
amount of fibers in one sample.
Test Method: IS: 1564-1988, IS: 1889-1976, IS: 2005-198, IS:
2006-1988, IS: 3416 -1999; IS: 3421-1988; IS: 6503-1988; IS:6504-1988; IS:
CHLORIDE AND SULPHATE:-
These are tested for having deleterious
effects on the fibrous material.
Test Method: IS: 4202 - 1967 for Chloride and IS: 4203 - 1967
FATTY MATTER CONTENT:-
The fatty matter content is the dried solvent
Test Method: IS: 199 - 1989.
The moisture content is expressed as the loss in
weight, when fabric is dried at 105 degree celsius.
Test method: IS: 199 - 1989.
The ash content is the residue, which is left from the
ignited fabric under prescribed conditions.
IRON & CHROMIUM:-
Iron and Chromium present in the fabric
indicate the amount of mineral khaki present in the fabric.
Test Method: IS: 4655 1968.
SOLVENT SOLUBLE MATTER:-
The solvent soluble matter is the known
amount of ethyl ether or benzene methanol mixture. These dried and left over
residue is expressed in terms of weight percentage of textile material.
Test Method: 4390 - 2001.
pH VALUE OF WATER EXTRACT:-
The pH value of the water extract refers
to the processing history of the textile index. This conforms to certain
limits including its acidity or alkalinity.
Test Method: IS: 1390 - 1983.
The scouring loss refers to the loss of natural
impurities such as pectin, oil, fats and waxes. These are gathered while
fabric is undergoing various treatments.
Test Method: IS: 1383 - 1977.
CARBOXYLIC ACID GROUP IN CELLULOSIC TEXTILE MATERIAL:-
in the form of fibers comes in contact with various oxidizing agents while
undergoing different chemical treatments. The result is the formation of
acidic oxy cellulose.
Test Method: IS: 1560 - 1974.
BARIUM ACTIVITY NUMBER:-
The barium activity number is the ratio in
which barium hydroxide is absorbed by mercerized cotton to that of
unmercerized cotton under certain conditions. The ratio is then multiplied
Test Method: IS: 1689 - 1973.
Formaldehyde in Textiles
Formaldehyde is released by the textiles
with some special finishes, when new, such as crease resistance. These are
mostly used on cotton or woolen textiles. It is water soluble and released
from the fabric, when fabric is washed before wearing.
Test Method: IS: 14563 - 1999.
OEKO - TEX 100 CERTIFICATE.