Sublimation Fastness Tester, Washing Fastness Tester, Light Fastness Tester, Color Fastness Tester, Crocking Fastness Tester, Rubbing Fastness Tester, Perspiration Fastness Tester

Light Fastness Tester

Light Fastness Tester is used to determine the color fastness of textiles against sunlight. 


B-Tex Engineering manufactured instrument produces accurate results as it is of most reliable quality and as per the required standards.
All dyed material experience change in color when exposed to daylight for a sufficiently long period because of the action of sunlight. The color fastness is denoted by the number of the light fastness standard fabric that has change color to the same extent as the test specimen. It is expressed as the numerical rating for light fastness.

Features of Light Fastness Tester:

  • An effective and essential fabric & garment testing equipment.
  • It is used to determine the color fastness and degradation of textiles to Sunlight.
  • This standard model comes with a 500 watt MBTL lamp.
  • Automatic voltage stabilizer.
  • Stainless steel clamps.
  • Gray scale for assessing change in color & L-4 standard @ extra cost.


Specifications of Light Fastness Tester:


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: 40 Nos. ‘C’ Cylindrical Cells
Maximum Space per Type: 110 x 50 mm ‘A’ Rectangular Cells
Specimen Thickness: Up to 15 mm
Specimen size: 100 x 50 mm
Maximum Number of Specimen:10 Nos.
Working Life of Lamp: 2000 Hours
Power: 220 Volts, single Phase, 50 HZ, A.C. Supply.
Power Consumption: Maximum 1 KW.
Water: Use of Distilled Water only in the water circulation Unit.
Dimension of the Unit: 700 mm(W) x 500 mm(D) x 850 mm(H)Net Weight: 25 kg.
Recommended Ambient: 20°-24°C Temperature
Operating Conditions: 50%-65% Relative Humidity
Humidity Control: Inserting Saturated Solution in the type ‘A’ & ’C’ Cells.

Technical specifications & appearance of machines are subject to change without any notice.


Light Fastness Tester confirms with the following international standards:
BS 1006 UK-TN, IS 2454-1985


How Light Fastness Tester Works?
Stage: 1

  • A strip of test specimen (50 × 10 mm) and one strip each of 1 to 8 light fastness standard (LFS) is mounted on the specimen card and the same type is put in the type ?A' rectangular cell. Along with double slot mask (1/3 area cover) 2/3 of the specimen is exposed to light.
  • The effect of light is followed by inspecting the specimen frequently. When a change in color of the exposed portion of the specimen can just be perceived, equal to gray scale grade 4-5, the number of the light fastness standard showing a similar change is noted.
  • The exposure of the specimen and the LFS is continued until the contrast between the exposed and the unexposed portions of the specimen or the LFS no. 7 is equal to gray scale grade 4.
  • If the LFS no.7 fades to a contrast equal to gray scale grade 4 before the specimen does, the exposure is terminated at this stage.

Stage 2:

  • If the specimen fades to a contrast equal to gray scale grade 4 before the LFS no.7  does, the double slot mask is taken out and the single slot mask is inserted having 2/3 area cover.
  • The exposure is continued until the contrast between the fully exposed and the unexposed portions of the specimen is equal to gray scale grade 3. The exposure is terminated at this stage.
  • Assessment of light fastness is done.


Light Fastness Tester confirms with international standards and comes under warranty. All this help provide customer satisfaction that promotes long term customer relationship which is our ultimate objective at B-Tex Engineering. 

Minimum 10 years part availability assurance from the date of Invoice.  

Perspirometer - Perspiration Fastness Tester

Perspirometer is used for determining the resistance of the color of textiles of all kinds and in all forms to the action of human perspiration. 


B-Tex Engineering brings most reliable Perspirometer at best price.
Color fastness of dyed or printed fabrics, against perspiration, is determined by exposing the fabric to the action of both alkaline and acidic reagents, while in contact with undyed adjacent fabrics on both sides.


Features of Perspirometer:

  • Can also be used for testing color fastness against sea water and water.
  • Made of stainless steel frame.
  • A different load for AATCC standards is available on request.
  • User friendly and corrosion resistant.
  • Smooth precision engineered components for excellent performance.

Specifications of Perspirometer:

Frame Construction: Stainless steel
Load on the Test Specimen: 5 kg.
Size of Test Specimen: 100 mm x 40 mm
Size of Acrylic Separator Plates: 115 mm x 60 mm
Number of Separator Plates: 21 Nos.
Dimensions of the Unit: 225 mm (L) x 72 mm(W) x 182 mm(H)
Net weight of the Unit: 8.3kg


Technical specifications & appearance of machines are subject to change without any notice.


Perspirometer confirms with the following international standards:
ISO 105, BS 1006, BSEN 20105, AATCC 15, 106, 107, 165, IS 971


How Perspirometer Works?

  • The test specimen is dipped in alkaline solution a liquor ratio of 50:1 and allowed to remain in the solution at room temperature for 40 minutes. The excess liquor is drained and the composite specimen is placed between the 2 acrylic separator plates.
  • Similarly the second composite specimen is made wet.
  • After loading the entire test specimen as above, acrylic separator plates are stacked one over the other and all these are placed in between the 2 loading stainless steel plates.
  • The loaded apparatus is placed inside a thermostatically controlled incubator maintained at 37°C for 4 hours.
  • Once the time is over, the apparatus is removed from there and the acrylic plates are removed with the composite specimens from the apparatus.
  • The test specimen is separated from the adjacent fabric and evaluated for:

  1. The change in color of the test specimen.
  2. The degree of staining of the white the 2 pieces of adjacent fabrics. They are evaluated using grey scales.

Perspirometer confirms with the international standards and comes under warranty. All this help provide customer satisfaction that promotes long term customer relationship which is our ultimate objective at B-Tex Engineering. 


Minimum 10 years part availability assurance from the date of Invoice.  

Sublimation Fastness Tester

Sublimation Fastness Tester is a suitable instrument for dyestuff manufacturers as well as textile processors for checking effects of dry heat on dyestuff.


B-Tex Engineering offers Sublimation Fastness Tester of the best quality and at the best price which gives accurate results.
Sublimation fastness and staining effect properties of individual dyes can be tested at various temperatures. In a single test, entire range of effective temperature can be tested. The heating pads are made up of hard chromed electrolyte copper for even and quick distribution of heat.


Features of Sublimation Fastness Tester:

  • Testing the effect of direct heat on the dyestuff.
  • up to 250°C temperature range.
  • 3 pairs, 6 heat pads.
  • 10 to 60 seconds contact timer.
  • Individual 3 temperature controllers with sensors.
  • Can test entire range of temperature in a single test.
  • Individual 6 temperature controllers with sensors.


Specifications of Sublimation Fastness Tester:


Power requirements: 220 V AC, 65 wattTemperature range for test: up to 250°CTemperature settings: variable temp setting on each pad. Power readout: Digital display for each pad.Number of heating stations: 3Total number of pads: 6 heating pads, 2 for each heating station, with individual heatingSize of each pad: 40 mm x 100 mm.Timer range: 0-60 sec.Machine dimensions: 38 cm.(w) x 34 cm. (d) x 28 (h)Machine weight: 16.200 Kg.


Technical specifications & appearance of machines are subject to change without any notice.


Sublimation Fastness Tester confirms with the following international standards:
ISO 105, BS 1006, AATCC 92, 114, 117, 133, IS 975


How Sublimation Fastness Tester Works?

  • A dyed cloth piece is sandwiched between two undyed pieces and placed to cover the heat pads and the test goes on for a pre-set time period.
  • The fabric pieces should be picked up immediately. The undyed fabric pieces will be stained by the dyes.
  • This gives the sublimation fastness properties for the range of temperature 130°C to 250°C in one test.
  • A ready comparison of sublimation fastness properties at various temperatures is hence available.

Sublimation Fastness Tester confirms with international standards and comes under warranty. All this help provide customer satisfaction that promotes long term customer relationship which is our ultimate objective at B-Tex Engineering. 


Minimum 10 years part availability assurance from the date of Invoice. 

Textile Color Fastness Tester - Rubbing, Washing, Light, Per

Crock Meter - Rubbing Fastness Tester

Crockmeter is used for testing the transference of color from the surface of one material to another by either wet or dry rubbing. Also known as Rubbing Fastness Tester.


B-Tex Engineering offers you precision engineered quality Crockmeter that too at best available price. Crockmeter is highly efficient and produces accurate results.
In addition to color transference tests, the Crockmeter performs scuffing, wet / dry abrasion, flexing, powdering, dry-cleaning, ink abrasiveness, and other tests. Test conditions are controlled and reproducible through the use of standard pressure and motion.


Features of Crockmeter, Rubbing Fastness Tester:

  • To determine the Color Fastness of Textiles.
  • The equipment consists of a counter.
  • It is provided with a flat peg.
  • It also consists of an operating handle.
  • Tests the color fastness of the textile in a very accurate manner.
  • It gives not only accurate but quick results also.


Specifications of Crockmeter, Rubbing Fastness Tester:

Diameter of the Rubbing Finger: 16 mm & 25 mm
Force on the Finger   : 9 N & 20 N
Size of Crocking Cloth    : (5 x 5) Cms & (7 x7) cms
Length of the Traverse     : 100 ±5 mm
Counter (Re-settable) : 4-Digit Counter
Size of Test Specimen  : 25 x 5 Cm
Overall Dimension of the Unit: 600 (W) x 190 (D) x 200 (H) mm
Net Weight of the Unit: 4 Kg. (9 lbs.)
Construction  : Cold-rolled steel


Technical specifications & appearance of machines are subject to change without any notice.


Crockmeter, Rubbing Fastness Tester confirms with the following international standards:
ISO 105, BS 1006, AATCC 8, BS EN 20105


How Crockmeter, Rubbing Fastness Tester Works?

  • Dry Rubbing:

•    Properly mount your specimen and test cloths. The counter has to be reset by moving the knob on the left side of the counter. The finger is positioned on the specimen at the base’s front end and handle is rotated in the clockwise direction at the rate of approximately 1 revolution per second. The handle is then rotated equal to the number of strokes specified by the test method.
•    When the desired number of strokes is reached, the crocking cloth is removed from the finger and its degree of staining has to be evaluated by SDC grey scale.

  • Wet Rubbing:

•    A fresh piece of crocking cloth is soaked in distilled water and the excess water is removed so that it contains its own mass of water.
•    The wet piece of the crocking cloth is fixed over the end of the finger of the Crockmeter and the test is undertaken.       
•    The dyed or printed fabric has to be mounted on a lower platform.
•    Then 10 cycles are rubbed with a white fabric, which is mounted on a peg in the upper rubbing arm. 
•    Then the extent of color that rubs away onto the white fabric against a color transference scale has to be determined. 
•    The rubbing action of the peg+ enabled fibers from the upper colored flannel fabric surface to be transferred onto the white backing fabric mounted on the lower platform. 
•    The cloth is then removed to evaluate the discolor level in comparison with a gray-scale


Crockmeter, Rubbing Fastness Tester confirms with international standards and comes under warranty. All this help provide customer satisfaction that promotes long term customer relationship which is our ultimate objective at B-Tex Engineering. 


Minimum 10 years part availability assurance from the date of Invoice.  

Washing Fastness Tester

Washing Fastness Tester is used widely for determining color fastness of textile materials to washings. At B-Tex Engineering we offer best quality instrument at best price and as per the required standards.


The color fastness of textile material is determined by way of mechanical hesitation of a specimen of textile with the piece of specified adjacent fabrics in Standard Soap Solution followed by rinsing and drying.  Thereafter, the change in color of specimen and stains of the adjacent fabrics are assessed with standard grey scale.


Video Link: https://www.youtube.com/watch?v=qdgKeSYBIhs


Features of Washing Fastness Tester:

It is fabricated out of quality stainless steel.

Possess electric heater to heat water in water bath.

The microprocessor based programmer is provided for temperature control.

Buzzer to indicate the completion of the process cycle or step.



Specifications of Washing Fastness Tester:

Electric Supply: Single phase 220 Volts, AC Supply

Heater Supply: 3000 watt Single Phase

Inner dimensions of the Main Bath: 450 X 410 X 295 mm

Number of Beakers (Test Vessels): 06 Nos. Leak-proof Beakers with Gaskets

Standard Seal for Beakers: 06 Nos. Special Neoprene Gaskets

Volume of each Beaker: 550±50 ml X 06 Beakers

Distance from Shaft: 45±10 mm

Speed of Rotation: 40±2 rpm

Temperature Controller: PROGRAMMABLE MEMORY BASED DIGITAL

Temperature Regulation: PT-100 with ±2.0°C (As per I.S.O.)

Timer (Digital): 0-99 Minutes

Motor: Single Phase, 

Geared Motor 220 Volt AC

Overall Dimensions of the unit: 700 x 470 x 370 mm

Net Weight of the Unit: 50 Kg


Technical specifications & appearance of machines are subject to change without any notice.


Washing Fastness Tester confirms with the following international standards:

ISO 105, BS 1006:1990, AATCC 61(TEST 1 A ONLY), 86,132,151,190, BS EN 20105


How Washing Fastness Tester Works?

Precondition the main bath, choosing the temperature and time suitable for the test.

Fill each jar with necessary amount of Standard Soap Solution to give a liquid to composite specimen ratio of 50: 1.

Assuming the temperature is attained, set the timer depending on your test.

Open the beakers and place one composite specimen in each jar containing test liquid. Fit the beakers to their respective position by pressing against the spring and rotating it.

Press the start switch. After the set time is reached, the motor stops automatically with an alarm buzzer.

Remove all the beakers and take out the Composite Specimens and SS balls with the help of filter unit.

Rinse the Composite Specimen twice in cold water and then in running tap water for 10 minutes and squeeze them.

Evaluate the change in color of the treated test specimen in comparison with an untreated piece of the same sample using the Standard Grey Scale for evaluation of change in color.


Washing Fastness Tester confirms with the international standards and comes under warranty. All this help provide customer satisfaction that promotes long term customer relationship which is our ultimate objective at B-Tex Engineering. 


Minimum 10 years part availability assurance from the date of Invoice. 


Color Fastness Tester, Sublimation Fastness Tester, Washing Fastness Tester, Light Fastness Tester,  Crocking Fastness Tester, Rubbing Fastness Tester, Perspiration Fastness Tester