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Gray scale
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Gray Scale
Gray Scale
The Gray Scale is a visual tool used in the textile and dyeing industry to evaluate and grade the color change or staining of a fabric after testing (e.g., washing, rubbing, and light exposure). It helps assess how much a fabric’s color has altered or transferred during durability or fastness tests.
Types of Gray Scale:
- Gray Scale for Color Change – Compares the original and tested sample to measure color fading or alteration.
- Gray Scale for Staining – Compares a white adjacent fabric (before and after testing) to assess color transfer or staining.
Rating System :
– Uses a 1 to 5 scale:
– Grade 5: No change or staining (excellent)
– Grade 1: Severe change or heavy staining (poor)
Intermediate grades (like 4–5, 3–4, etc.) are also used for finer evaluation.
Construction :- Each scale includes pairs of gray chips with varying contrast levels to visually match the test results.
Usage Areas:- Textile testing labs- Dyeing and finishing quality control- Standards like ISO, AATCC, and BIS tests
Benefits :
- Standardized Evaluation – Provides a consistent and objective way to assess color change or staining.
- Simple and Quick to Use – Enables rapid visual comparison during fabric testing.
- Widely Accepted – Complies with international standards (ISO, AATCC) for color fastness grading.
- Cost-Effective Tool – Inexpensive yet essential for reliable quality control in textiles.
- Enhances Quality Assurance – Helps detect dyeing or printing issues before bulk production.
- Supports Multiple Tests – Used for evaluating wash fastness, rubbing fastness, perspiration, light exposure, and more.
- Portable and Durable – Easy to carry and long-lasting with proper care.
Features :
- Dual Type Availability – Comes in two types: for Color Change and for Staining.
- 5-Point Grading System – Grades from 1 (poor) to 5 (excellent), with half-step intervals like 4–5, 3–4.
- Standardized Grey Chips – Includes contrasting grey color pairs to match fabric changes accurately.
- Compact Design – Small, portable card or booklet format for easy lab and field use.
- Durable Material – Made from stable, fade-resistant plastic or cardboard for long-term use.
- Compliance with Standards – Follows ISO 105-A02 (Color Change) and ISO 105-A03 (Staining) norms.
- Easy Visual Comparison – Designed for quick side-by-side assessment of fabric before and after testing.
How to Use :
Select the Right Gray Scale – Use Color Change scale to check fading, or staining scale to check color transfer.
- Place the Samples – Lay the untested (original) and tested fabric side by side (for color change)
– Or place the adjacent white fabric next to the gray scale (for staining).
- Match Against Gray Scale Chips – Visually compare the difference between the samples and find the closest matching gray pair on the scale.
- Assign a Grade
– Grade from 1 to 5, where:
– Grade 5 = no change/staining
– Grade 1 = severe change/staining
– Use half-grades like 4–5 if needed.
- Record the Result – Note the grade in your test report as per the test method (e.g., ISO 105).
- Store Properly – Keep the gray scale away from light and moisture to avoid fading.
- Features :
- Dual Type Availability – Comes in two types: for Color Change and for Staining.
- 5-Point Grading System – Grades from 1 (poor) to 5 (excellent), with half-step intervals like 4–5, 3–4.
- Standardized Grey Chips – Includes contrasting grey color pairs to match fabric changes accurately.
- Compact Design – Small, portable card or booklet format for easy lab and field use.
Categories:
- Gray Scale for Color Change – Used to evaluate the degree of color fading or change in a fabric after testing (e.g., washing, light exposure). – Assesses how much the original color has altered.
- Gray Scale for Staining – Used to assess the degree of color transfer from a dyed fabric to an adjacent white fabric during testing (e.g., rubbing, washing).
– Evaluates staining on undyed fabrics.
These two types are essential tools in color fastness testing across textile labs. Want to know which standard tests use each type?
Gray Scale
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Digital Elmendorf tearing tester
Digital Elmendorf Tearing Tester
Digital Elmendorf Tearing Tester
- Accurate Tear Strength Measurement - Provides precise data on tear resistance, critical for quality control and product performance.
- Digital Readout - Easy-to-read display gives instant, reliable results without manual calculations.
- High Reproducibility - Ensures consistent test outcomes due to controlled tearing angle and speed.
- Fast Testing Process - Simple loading and quick test cycle increase lab efficiency.
- Suitable for Various Materials - Tests a wide range of flexible materials like textiles, paper, plastic, and packaging.
- Customizable Range - Use of optional weights extends the test range for low to high tear strength materials.
- Low Sample Waste - Requires small fabric or material samples, reducing waste during testing.
- Standards Compliance - Meets international testing standards (e.g., ASTM D1424, ISO 13937) for credibility and uniformity.
- Precision Sample Clamp - Securely holds samples in place to ensure accurate tear initiation.
- Pre-Cutting Blade - Integrated knife creates a precise initial slit in the sample before tearing.
- User-Friendly Interface - Simple buttons and screen navigation for ease of operation.
- Standard Test Compliance - Compatible with ASTM D1424, ISO 1974, ISO 13937, and other tear strength standards.
- Sturdy Construction - Made with durable materials for long-lasting performance and stable operation.
- Compact Design - Space-efficient footprint ideal for laboratory environments.
- Data Output Options- Some models offer USB or printer connectivity for result documentation.
- Prepare the Sample - Cut the material (fabric, paper, film, etc.) to standard size (typically 100 × 63 mm for textiles) and slit it with the pre-cutter as required.
- Select Pendulum Weight - Choose the appropriate pendulum or add counterweights based on expected tear strength.
- Calibrate the Machine - Set the pendulum to its starting position and zero the display.
- Clamp the Sample - Fix one half of the sample in the stationary clamp and the other in the moving clamp.
- Cut the Initial Slit - Use the integrated blade to make a precise cut at the marked slit area (usually 20 mm).
- Release the Pendulum - Trigger the pendulum to swing and tear the sample through the pre-slit.
- Read the Result - The digital display will show the tearing force automatically (in g, mN, or cN).
- Record or Export Data - Save or print the result if your model supports USB or printer connection.
- Reset for Next Test - Reposition the pendulum and prepare a new sample for the next cycle.
Scope of application
It is used for the determination of the tear resistance of various woven
fabrics (Elmendorf method), and it can also be used for the determination
of the tear resistance of thick paper, plastic sheeting, electrical tape, etc.
Related standards
GB/T 3917.1 FZ/T60006 FZ/T75001 ISO1974/9290 ASTM D1424/5734
etc.
Instrument characteristics
1. Maximum 300N test range
2. Microcomputer control, digital decoding, support online
communication
3. Color touch screen control, Chinese and English menu operation
interface
4. Pneumatic clamping, automatic cutting
5. A variety of measurement units (cN, gf) selection
6. Fully automatic operation with safe operation protection.
7. Automatically increase potential energy
[Technical parameter]:
1. Test range: first gear: (0～16)N second gear: (0～32)N third gear: (0～
64)N fourth gear: (0～128)N fifth gear: (0～300)N
2. Test accuracy: ≤±0.2%F·S
3. Tearing length: 43mm (non-standard 30-60mm can be set)
4. Automatic incision length: (20±0.2)mm
5. Sample size: (100×63)mm
6. Specimen clamping: pneumatic way
7. Sample test: Up to 10 sets per group on the device side, and 30 sets
of data can be selected to be saved
8. Power supply: AC220V±10% 50Hz 100W
9. Dimensions: (650×660×680)mm
10. Weight: 50kg
[Sample of control interface]:(English version is also available.) 
GSM Cutter with Balance
GSM Cutter with Balance
GSM Cutter with Balance
Stretch Recovery Tester Static Method
Stretch Recovery Tester Static Method
Stretch Recovery Tester
- A sample is stretched to a predetermined extension or force.
- The stretch is maintained for a set period.
- After removing the load, the recovery (return to original length) is measured after a fixed time.
- The fabric sample is clamped and stretched to a specific length or force.
- It’s held for a fixed duration (e.g., 1–5 minutes).
- The tension is released, and the sample is allowed to recover.
- The recovered length is measured after a set time.
Stretch Recovery Tester
Random Tumble Pilling Tester
Random Tumble Pilling Tester
Random Tumble Pilling Tester
- Multiple Test Chambers - Typically comes with 2 or 4 cork-lined chambers for simultaneous testing of multiple fabric samples.
- High-Speed Rotating Impellers - Impellers rotate at around 1200 rpm to create intense, random tumbling motion.
- Compressed Air System - Ensures continuous fabric movement and realistic simulation of wear.
- Digital Timer- Allows precise setting of test duration with easy-to-read display.
- Viewing Windows- Transparent chamber doors for monitoring fabric movement during testing.
- Standard Compliant Design- Meets ASTM D3512, ISO 12945-3, GB/T 4802.4 and other major standards.
- Robust Construction- Durable materials and components designed for long-term laboratory use.
- Easy Sample Handling - Quick-open chamber lids and simple sample placement process.
- Compact Footprint- Saves space in laboratory environments.
- Prepare Samples- Cut fabric into standard-sized specimens (usually circular or rectangular per ASTM/ISO specs)- Condition samples as per the standard (usually 24 hrs at 21°C, 65% RH).
- Load the Chambers - Place each sample into a cork-lined test chamber. - Add a small piece of gray cotton backing fabric if required by the method.
- Set Parameters - Adjust compressed air pressure (typically 14–21 kPa or 2–3 psi).
- Start the Test- Close the chamber doors and press start. - Impellers rotate, tumbling the samples randomly with air flow.
- Stop and Unload - Once the timer ends, remove the samples carefully.
- Evaluate Pilling - Compare the tested samples to standard pilling rating photographs or scales.
- Record Results - Document the pilling grades and any observations.
[Scope of application]:
It is used to test the fuzzing and pilling
performance of the fabric under the condition of
free rolling and friction in the drum.
[Related standards]:
GB/T4802.4 (Standard Drafting Unit)
ISO12945.3, ASTM D3512, ASTM D1375, DIN 53867, ISO 12945-3, JIS L1076, etc.
[Technical parameter]:
1. Number of boxes: 4
2. Roller specifications: diameter (146±1.0) mm, depth (152.4±1.0) mm;
3. Lining material: polychloroprene lining thickness (3.2±0.4) mm. , Hardness (60～70)
IRHD;
4. Impeller specifications: φ12.7 mm×120.6 mm;
5. Plastic blade specifications: 10 mm×65 mm;
6. Rotation speed: 1～2400 rpm can be set freely
7. Working pressure: 14kPa～21kPa;
8. Time counting: (1～999) min.
9. Power supply: AC220V±10% 50Hz 80W
10. Appearance: (480×400×680)mm
11. Weight: 40kg
[Standard accessories]
Items and specifications Qty. Note
Fuse 2 3A
Main machine 1
Power cable 1
Air tube 1 Φ8mm
Grey cotton sliver 4
Cork lining 4
Rating sample photo 1
White glue 1
Bursting strength tester
Bursting strength tester
true burst
- Available with automatic test strip feeder Measurements are simple to make with the Mullen type Bursting Strength Tester. Fast automatic measurements Measurement starts automatically once a test piece has been placed in the measuring gap. The clamping foot descends, and a bursting strength measurement is made.
- Bursting pressure can reach up to 1.2MPa 5. The maximum burst and expansion degree can reach 70mm. 6. Strengthen the lighting system on the test surface. 7. The main aerodynamic force helps to clamp the sample system. 8. A variety of test areas are available, and the switching is easy.
- A variety of unit conversions between Chinese and English. 10. Reliable anti-pinch safety protection design. [Technical parameter]: 1. Test range: (0～1)Mpa (the range above 1Mpa needs to be customized) 2. The minimum graduation value: 0.0001Mpa 3. Pressurization mode: direct pressurization, timing pressurization, and expansion degree pressurization.
