Light fastness tester or color fastness tester is a laboratory instruments for color blind test technique to determine the color fastness to light of textiles and garments against sunlight. All dyed material experience change in color when showing to daylight for a adequately long period because of the act of sunlight. The light fastness test is signified by the number of the light fastness standard fabric that change color as the test specimen. It is describe as the numerical score for light fastness.
Features of Tester for Color Fastness To Light:
Feature of light fastness tester for color blind test is given below with picture
Light Fastness Tester
It is an effective fabric & garment testing equipment using color fastness to light
Light fastness tester is used to degradation of textiles to Sunlight.
Clamps of stainless steel is used for laboratory instruments
The test report of light fastness test is documented with test record
Light fastness tester is very essential in textile lab
Other Chemical Fastness test:
The following chemical test are carried out by QA of finished fabric –
Fastness to perspiration
Fastness to light
Fastness to heat
Fastness to sea water
Fastness to chloraminated water
Washing stability
Fabric pH
Fastness to perspiration-:
Machine used -Perspirometer chemical kit & Carbolite incubator.
Machine manufactured by -James . H . Heals and company, England.
Person responsible-QA lab assistant
Frequency-Whenever customer required.
Procedure -BS 1006 ref- E 04, AATCC 105, AATCC 15.
In case of non conformity -Re-wash and Re-finish with fixing agent.
Light fastness test:
Machine used -Light fastness tester (Mercury Vapor Lamp).
Machine manufactured by-James . H . Heals and company, England.
Person responsible-QA lab assistant
Frequency-Whenever customer required.
Procedure -BS 1006 B02.
Performance standard-For dark shade 4C, for light & Pal shade 3C and according to customer requirement.
In case of non conformity -Select dye stuff with better light fastness property
Fastness to heat:
Machine used -Contact heat test unit
Machine manufactured by -Roaches Engineer limited
Person responsible-QA lab assistant
Frequency-Whenever required.
Procedure -ISO 105 – Poland BS 1006 – X11.
Performance standard-According to customer requirement.
In case of non conformity -Select dyestuff with better fastness to heat
Fastness to sea water:
Machine used -Perspirometer chemical kit & Carbolite incubator.
Machine manufactured by -James . H . Heals and company, England.
Person responsible-QA lab assistant
Frequency-Whenever required.
Procedure -ISO 105 E02 – 1989.
Performance standard-According to customer requirement.
In case of non conformity -For color change 4C and for color staining 4S.
Fastness to Chlorominated water:
Machine used -Gyro wash
Machine manufactured by-James . H . Heals and company, England.
Person responsible-QA lab assistant
Frequency-Whenever required.
Procedure -AATC 162
Performance standard-ccording to customer requirement.
In case of non conformity -For color change 3C
Fastness to washing stability:
Machine used -Electrolue Wascator.
Machine manufactured by-Wascomat.
Person responsible-QA lab assistant
Frequency-Every order and batcher.
Procedure -BS 4923 ref- 2A, AATCC135, ISO 6330.
In case of non conformity -Re-finish and Re-sanforize.
Fabric pH:
Machine used -Metller Toled
Machine manufactured by -Metller Toledo AG
Person responsible-QA lab assistant
Frequency-Whenever required.
Procedure -AATCC 81 – 1996
Performance standard-According to customer requirements.
In case of non conformity -Re-wash or Re finish with acid (in case of reactive dyed fabric)
Water Hardness Test:
A.100ml water is taken in a Vickers
B.4ml ammonia buffer solution is taken in it.
C.2-3 drops black indicator ( Ericromic Black T
Then have to titrate with 0.01N EDTA.
Result- = Burette reading × 10, Standard> 60
If burette reading is more than 6o then it will not be ok.
TEST METHOD
Principle
The UV screening agent is applied in combination with TERASIL dyes by padding, followed by drying and Thermosoling treatments.
The light fastness improvement achieved for a combination of dyes is assessed colorimetrically by standardized HT light exposure tests.
Procedure
Material
10.0 g Tersuisse polyester tricot,
washed off, heat set at 175°C
type 2031 ( No. 5-4204 )
Machinery / apparatus
Benz pad mangle
Mathis stenter
Dyes
Dyes
pale grey
charcoal
TERASIL Yellow X-GWL
1.30 g/l
TERASIL Red X-GSA
0.30 g/l
TERASIL Violet X-B
0.04 g/l
TERASIL Blue X-BGE
0.30 g/l
TERASIL Grey X-SGN
50 g/l
Chemicals / auxiliaries
UV screening agent 0, 15, 30, 60 g/l
CIBAFLOW PAD 1 g/l
IRGAPADOL MP 10 g/l
acetic acid 80 % pH 5.5 x ml/l
Liquor
100 ml per sample, de-ionized water
Padding
Pick-up: 100 %
Temperature: 20°C
Pressure: 12.0 kp/cm2
Speed: 1.0 m/min
Runs: 2
Drying
5 min at 120°C, of which 2 min without and 3 min with air circulation
Thermosoling
90 s at 215°C for pale – medium shades
90 s at 230°C für deep shades
Afterclearing
rinse
5′
Cold
afterclear
5′
70°C
2 g/l hydrosulphite
5 g/l caustic soda 30%
1 g/l ERIOPON OS
rinse
5′
Warm and cold
Neutralize
5′
20°C
0.5 ml/l acetic acid 80%
Rinse
1′
Cold
Light fastness tests
The dyed samples are tested by the well-known automobile industry standard HT light exposure procedures. The choice of test is country-specific, the main ones being:
SAE J1885 with 488.8 kJ
FAKRA 5x DIN 75202
JASO BP 83°C 400 h
Assessment
Colorimetric: colour difference (CIELab)
CFU relative strength (in %)
Fastness/change of shade
Specifications of Color Fastness Tester:
Specification of light fastness tester for color blind test is given below –
[label type=”label” title=”Specifications Name“]
[label type=”label” title=”Specifications Value“]
Product Category
Lab
Machine Category
Color Fastness Tester
Product Name
Color Fastness Tester laboratory instruments
Product Model
According to Manufacturer
Product Class
New
Origin
China/India/Others
Brand/Manufacturer
Name of Manufacturer
Agent in Bangladesh
No/Yes
Power
220 Volts, 50 HZ, A.C. Supply
Temperature
20°-24°C
Certification
SGS/Others
Production Capacity
NA
Light Source
500W, MBTL Fading Lamp
Test Chamber Temperature
Ambient to 50° C
Temperature Range Control
By Water Circulation in Type ‘A’ rectangular cells.
Maximum Number of Type
12 Nos. ‘A’ Rectangular Cells
Maximum Number of Type
50 Nos. ‘C’ Cylindrical Cells
Maximum Space per Type
110 x 50 mm Rectangular Cells
Specimen Thickness
Up to 15 mm
Specimen size
100 x 50 mm
Maximum Number of Specimen
10 Nos.
Life of Lamp
2000 Hours
Power Consumption
Maximum 1 KW.
Water
Use of Water only in the water circulation Unit.
Dimension
700 x 500 x 850 mm
Weight
25 kg
Operating Conditions
Description
To determine the color fastness and aging to sunlight, weather resistance, compound color fastness to sunlight-perspiration of colored textile, plastic, etc
Bursting Strength Tester works for Compression Test :
Bursting strength is the distending force and compression test which is applied at right angles to the plane of the fabric, under specified conditions, which will result in the rupture of a textile. Compression test are generally used compression test for fabrics where there are definite warp and weft directions in which the strength can be measured. There are also fabrics for impact test and tensile testing which are simultaneously stressed in all directions during service, such as parachute fabrics, filters, sacks, nets, and present at the elbows and knees of clothing, where it may be important to stress them in a realistic manner.
Specifications of Bursting Strength Tester :
[label type=”label” title=” Specifications Name“]
[label type=”label” title=”Specifications Value“]
Product Category
LAB
Machine Category
Bursting Impact Test
Product Name
Auto Bursting Strength Tester for burst test
Product Model
According to Manufacturer of burst test
Product Class
New
Origin
China/India/Others
Brand/Manufacturer
Name of Manufacturer
Agent in Bangladesh
No/Yes
Power
1 , AC220± 10%, 50 Hz, 120W
Temperature
(20±10) °C
Certification
SGS/Others
Production Capacity
High Pressure 2.5~100 Kg/ cm^2 (0.1kg/cm^2)
Unit (sitchable)
Kpa, psi, kg/cm^2
Accuracy
± 0.5%
Pressure Range
250~5600kpa
Speed of Compression
High Pressure 170± 10ml/min
Specimen Clamping Force
>690kpa
Oil
85% Glycerin; 15% Distilled Water
Sensing method
Pressure Transmitter
Indicating Method
Digital
Display
LCD
Material of the Ring
Stainless Steel
Opening in Upper Clamp
31.5 ± 0.05 mm Diameter
Opening in Lower Clamp
31.5 ± 0.05 mm Diameter
Motor
Anti-vibration Motor 1/4 HP
Operation Method
Semi-automatic
Resolution
1 kPa
Dimention
445×425×525mm
Weight
Approx. 64 kg
Description
Impact testing are engineering instruments for tensile testing a widely used measure of resistance to rapture in fabric. impact test equipment
Tensile Test:
Machine used :Alphatens tensile tester & Titan universal strength tester.
Machine manufactured by :James . H . Heals and company, England.
Person responsible for tensile test: QA lab assistant
Frequency:Every order
Procedure of tensile test:According to customer’s requirement and / or as specified in the ATL quality stander specification.
Performance standard:According to ATL quality stander specification
In case of non conformity :To increase tensile strength re-mercerized (increase of 5 %to 10%) and re finish.
Feature of Bursting Strength Tester for Tensile Testing:
Feature of bursting strength tester for tensile testing is given here-
Parts of Bursting Strength Tester
User friendly menu interface for bursting tester of impact testing for tension test
Burst test has data processing function of flexural strength for tension test
It is applicable to tension test bursting strength for fabric
Used for testing the burst test and degree of fabrics, non-woven fabrics
Crockmeter is a scientific equipment used in textile mills, generally use for meter test and textile testing of the transference of color from the surface of one material to another by either wet or dry rubbing. This scientific equipment apply a certain pressure on the specimen and do the repeating rubbing testing after set times in a specified stroke after that compared the white rubbing clothing with the color fastness staining grey scales for accessing the decoration grade to provide the underlie for improving textile dyeing. It is category of Laboratory Equipments
Function of Crock Meter for Meter Test:
For determining the colour fastness of textiles in textile mills for wet rubbing which ensure accurate meter test and this test equipment is a laboratory instrument used in textile factories
Specifications of Crock Meter which is used as Laboratory Equipment:
[label type=”label” title=”Specification Name”]
[label type=”label” title=”Specification Value”]
Product Category
Meter
Machine Category
Crockmeter
Product Name
Testing Machine( dyeing and printing)
Product Model
Manufacturer of laboratory equipments
Product Class
New
Origin
Europe/China/Others
Brand/Manufacturer
Made in China
Agent In Bangladesh
Yes
Power
AC 220V 3A
Certification
SGS/Others
Production Capacity
1 pcs/time
Testing Speed
60r/min
Dimension of Rubbing Head
16mm
Reciprocate Stroke
Straight line 104mm
Dimension(WxDxH)
28x61x30cm
Weight
18KG
Wide Cap Frame
75 x 360
Semi Wide Cap Frame
83 x 180
Tubular Frame
550 x 595
Description
Used for Crockmeter /Color Fastness to Rubbing Testing Machine, Use to do the colour fastness testing by this laboratory equipment
Features of Crock Meter working as Test Equipment:
Crockmeter is a laboratory equipment which has a counter,
Excellent Service in textile mills / textile factories
Crockmeter is a scientific equipment which has an operating handle,
Manually changeable the voltage,
Provided crocking finger by this test equipment
The professionals ensure measurement with this test equipment.
Crocking Test:
This test verifies the color bleeding property of garment. The instrument called CROCK METER. This process done in two types: (1) DRY CROCKING (2) WET CROCKING. Acceptable standard varies from buyer to buyer but best standard is
Crocking Procedure:
For dry process, place the swatch of testing material under plate of crock meter. With crock meter cloth, 10 cycle of rubbing will be done on testing material. Shade effect will come on crock meter cloth, then measure it with gray scale and allocate the rating. In wet process, everything remains same except that crock meter cloth is wet with one drop of distil water.
Working Procedure of Crock Meter for Textile testing:
The crockmeter is a scientific equipment made for textile factories to rigid flat metal where the test specimen can held firmly. As a result abrading finger rubs against it.
Crock Meter
Generally the platform is fixed on the base of the scientific equipment which lies in a horizontal plane and it abrading fabric picks up color is lost when the test specimen during rubbing. The arm is moved by a manually operated crank and connecting line
[1] Obaidur Rahman, BSc in Textile Engineering, Bangabandhu Textile Engineering College
Spectrophotometer is the principle of FTIR – Fourier transform infrared spectroscopy used for color management in computer. It is also known as spectrometry, colorimeter, spectrophotometry etc. Optical density of these equipments are very complex.
Category of Optical Density of Spectrophotometer:
There are different types optical density of spectrophotometer is developed by the manufactures
Spherical Spectrophotometers
Atomic Absorption Spectrophotometer
Laboratory Colorimeter / Digital Colorimeters
UV VIS NIR Spectrophotometer
Portable Color Spectrophotometer
UV VIS Spectrophotometer
Visible range
Double Beam Spectrophotometer -UV Visible
Infrared Spectrophotometer
Single Beam Spectrophotometer -UV Visible
Spectrophotometers – by Wavelength Range
How a Spectrophotometer Works :
Numerical Gloss Control- Instead of using a mechanically driven gloss trap, the Spectrophotometer should equipped with a patented numerical gloss (SCI/SCE) control system.
