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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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Related products
fabric moisture permeability tester
Fabric Moisture Permeability Tester
Fabric Moisture Permeability Tester
- Upright Cup Method: The fabric covers a cup containing water, and the assembly is placed upright in a controlled environment. After a set duration, the weight loss is measured to determine the WVTR.
- Inverted Cup Method: The fabric is sealed over a cup, which is then inverted and exposed to a controlled environment. The amount of water vapor absorbed by the fabric is measured over time.
- Sweating Hot Plate Test: Simulates human perspiration by measuring the energy required to maintain a constant temperature on a heated plate covered with the fabric, providing insights into the fabric's breathability.
- Multi-Cup Design - Typically includes 6 or more test cups for simultaneous testing of multiple samples.
- Rotating Turntable - Ensures uniform air exposure and consistent vapor transmission across all samples.
- Precision Weighing System- Accurate measurement of weight loss to calculate water vapor transmission rate (WVTR).
- Temperature & Humidity Control - Maintains stable environmental conditions (e.g., 23°C, 50% RH) for reliable results.
- Digital Display or Software Interface - Displays real-time data and test status; advanced models offer data logging and export.
- Compliance with Standards - Supports ASTM E96, ISO 15496, BS 7209, JIS L1099 testing methods.
- Sealed Test Chambers- Prevents external air interference, improving accuracy.
- Corrosion-Resistant Construction - Durable materials suitable for long-term use in lab environments.
- Easy Sample Mounting - Quick and secure fabric placement on test cups with sealing rings.
- Low Maintenance Design- Simplified components for easy cleaning and upkeep.
- Prepare the Test Solution - Fill each test cup with a set amount of water (e.g., 50 ml), or a desiccant if using inverted method.
- Mount the Fabric - Cut the fabric into circular pieces matching the cup size.
- Weigh the Cups - Record the initial weight of each cup with the fabric mounted.
- Place on Turntable - Position all cups on the rotating tray inside the controlled chamber.
- Set Conditions - Close the chamber and maintain temperature (e.g., 23°C) and relative humidity (e.g., 50%) as per test standard.
- Start the Test - Begin rotation (usually ~2 RPM) and let it run for the specified time (often 24 hours).
- Weigh the Cups Again- After the test duration, reweigh the cups to determine weight loss due to moisture vapor passing through the fabric.
- Calculate WVTR - Use the formula: WVTR = (Weight Loss in grams × 24) / (Test Area in m² × Time in hours) Expressed in g/m²/24h.
- Clean and Store - Clean cups and components for future use.
Scope of application
It is used to determine the moisture permeability of various fabrics
(including moisture permeable coated fabrics)
and nonwovens such as batting cotton and space cotton.
[Related standards] GB/T12704 ASTM E90 JIS L1099A BS 7209 JIS L1099B (custom) etc.
Instrument characteristics
1. Integrated structure of baking oven and constant temperature and humidity box.
2. Microcomputer control, color touch screen Chinese menu operation.
3. Circulating air velocity 0.2-3m/s digital setting.
4. Imported high-precision temperature and humidity sensor, imported motor drive, ceramic
heating tube heating.
Technical parameters
1.Work mode: Microcomputer control, color touch screen Chinese menu operation, test environment monitoring.
2. Sample box control temperature:15 ~ 40 C, accuracy 0.1 + C, resolution 0.01 C
3. Heat dissipation mode:Air cooling
4. Sample box control humidity:30 ~ 95%, precision + 2%, resolution 0.01%
5. Test chamber humidification:≥300ml/h
6. Accompany oven control temperature: Room temperature to 200 c
7. Test time:1min～999h59min
8. The rate of circulating steam flow:0. 2-3m/s digital setting resolution 0.01m/s
9. Moisture permeability area:2827㎜2（∮60㎜GB）
Optional 3848, 2 (70 70 ASTM)
10. The number of moisture permeable cups.6 (GB) can be replaced by 6 (US standard).
11. Internal dimensions of drying oven:490×400×215mm
12. Power supply:Ac220V 50Hz 6kw
13. Size:930×820×1700mm
14. Weight:350kg 
Color Matching Cabinet-Light Box
Color Matching Cabinet-Light Box
Color Matching Cabinet-Light Box
VeriVide Colour Assessment Cabinets
VeriVide Colour Assessment Cabinets
VeriVide offers high-quality Colour Assessment Cabinets (CACs) such as the CAC 60-4, CAC 60-5, and CAC 120-4&5. These cabinets, originating from the UK, are reliable tools for visual evaluation in quality assurance, meeting national, international, and retailer standards. They effectively mitigate issues related to color assessment.VeriVide Colour Assessment Cabinets
High-quality visual evaluation tool for quality assurance. Adhering to national, international and retailer standards.Colour Assessment Cabinet's (CACs) reduce problems associated with assessing products or samples in different environments,be though geological or seasonal, offering a cost-effective method to ensure visual accuracy and product quality.
Color Light Box Enhance color precision with VeriVide's cutting-edge Colour Assessment
Cabinets. These cabinets are meticulously designed to ensure accurate color evaluation in various industries. Invest in VeriVide Colour Assessment Cabinets to elevate your color assessment process.
Enhance Color Precision with VeriVide's Cutting-Edge Assessment Cabinets, which meet or surpass ISO 3664 and BS 950 Part 1 international standards. The cabinets are adaptable to user requirements, with lamp options to choose different light sources. Available in 60, 120, and 150cm widths, VeriVide Colour Assessment Cabinets provide a flexible solution for accurate color assessment.
Incorporate user-friendly features like servicing indicator, auto sequence, warm-up, power save and data storage.4 or 5 light source options Versions available for colour fastness testing and particulate testing both adhering to global standardsEnsure that you are using the best equipment available as they provide the best fluorescent D65 daylight simulator, with the highest Colour
Rendering Index (CRI), available. VeriVide Colour Assessment Cabinets products are known as light boxes, viewing booths, colour cabinets and others, depending on which industry or country they are serving in. They are used within a wide array of industry sectors throughout the world including textile and apparel, graphics, automotive, ceramics, cosmetics, pharmacology (CAC Particulate),
food, footwear, packaging and printing.Download the Datasheet below for more information or click 'VeriVide CAC Datasheet Here' to get in touch with colour experts.
VeriVide CAC Datasheet Here Features of VeriVide Colour Assessment Cabinets
• CAC 60, CAC 120 and CAC 150 accommodate 60, 120 and 150cm tubes respectively
- Either 4 or 5 light sources available for each model including D65, D50, 840P15, F and UV - see Lamp Options.• Internal finishes in Munsell N5, Munsell N7 or Grey 5574 • Diffuser and/or dimmer options available Dimensions of VeriVide Colour Assessment Cabinets CAC 60-4 Dimensions (mm) Width Height Depth Overall 710 545 420
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.) 
Hydraulic GSM Cutter
Hydraulic GSM Cutter
Hydraulic GSM Cutter
- High Cutting Precision - Ensures consistent and accurate fabric sample size for reliable GSM results.
- Effortless Operation- Hydraulic action reduces manual effort and operator fatigue.
- Ideal for Thick or Multi-Layer Fabrics - Cuts through dense or multiple fabric layers cleanly.
- Time-Saving - Speeds up the sample preparation process, especially for high-volume testing.
- Improves Test Accuracy - Uniform samples help eliminate errors in GSM calculation.
- Durable and Long-Lasting - Robust construction ensures stability and extended service life.
- Safety Enhancement - Reduces risk of injury compared to manual rotary cutters.
- Consistent Pressure Application - Hydraulic mechanism maintains steady force for each cut.
- Hydraulic Press Mechanism - Applies consistent and strong pressure for clean, even cuts.
- Standard Cutting Die (100 cm²) - Produces fabric samples suitable for GSM testing with standard area.
- Heavy-Duty Construction - Built with robust metal frame for long-term lab or industrial use.
- Sharp Stainless Steel Blades - Durable and replaceable blades ensure smooth, precise cuts.
- Cutting Pad Included - Comes with a rubber or nylon base to protect blades and ensure clean edges.
- Simple Lever or Button Operation - Easy to use with minimal training required.
- Non-slip Base - Provides stability during operation for safe, accurate cutting.
- Supports Various Fabric Types
- Place the Cutting Pad - Lay the rubber or nylon cutting pad on a flat surface.
- Position the Fabric - Place the fabric sample flat and smooth on the cutting pad.
- Align the Cutter - Position the GSM cutter die over the desired area of the fabric.
- Activate Hydraulic Press - Pull the lever or press the button to apply hydraulic pressure and cut the sample.
- Remove the Sample - Lift the cutter and carefully take out the circular fabric piece (usually 100 cm²).
- Weigh the Sample - Place the cut sample on a precision balance or GSM scale to determine weight.
- Calculate GSM - Multiply the sample weight (in grams) by 100 to get GSM.
Hydraulic GSM Cutter
Laboratory mini stenter Dryer
Laboratory mini stenter Dryer
Automatic fixing Dryer
- Controlled Heating System
- Adjustable Fabric Width
- Variable Speed Conveyor - Allows control over fabric dwell time for drying or heat-setting.
- Compact and Bench-Top Design - Space-saving design ideal for textile labs and R&D units.
- Digital Controls - Easy-to-use digital interface for setting temperature, conveyor speed, and process time.
- Transparent Viewing Window - Allows operators to monitor fabric movement and drying visually.
- Low Energy Consumption - Designed for lab use, consuming less power than industrial models.
- Accurate Simulation of Production - Mimics industrial stenter conditions on a lab scale, ideal for pre-production testing and R&D.
- Cost-Effective Testing - Enables testing and fabric finishing without the high cost or space requirements of full-scale machines.
- Energy Efficient - Consumes less power compared to large stenters, making it economical for small-scale or frequent use.
- Precise Control - Offers accurate control of temperature, speed, and fabric tension, ensuring consistent results.
- Space-Saving Design - Compact and bench-top friendly, perfect for laboratories with limited space.
- Multiple Applications - Useful for drying, heat-setting, shrinkage testing, and evaluating chemical finishes.
- Faster Development Cycles - Speeds up new product development by allowing rapid sample testing and adjustments.
- Improved Fabric Quality - Helps optimize finishing parameters for better dimensional stability, hand feel, and appearance.
- Safe and User-Friendly- Designed with lab safety in mind, including temperature safety controls and easy operation.
- Compact Bench-Top Design - Ideal for laboratory use with limited space requirements.
- Adjustable Temperature Control - Precise heating (usually up to 220–250°C) with digital controllers for accurate processing.
- Variable Conveyor Speed- Allows adjustment of fabric dwell time for different drying or heat-setting needs.
- Width Adjustment Mechanism - Equipped with clips or pins to stretch and fix fabric width-wise, simulating industrial stenter conditions.
- Transparent Viewing Window - Enables visual monitoring of fabric movement and drying inside the chamber.
- Digital Display Panel- Easy-to-use interface for setting and monitoring temperature, speed, and time.
- Stainless Steel Construction- Durable and corrosion-resistant for long-term use at high temperatures.
- Uniform Heat Distribution- Ensures consistent fabric treatment across the width.
- Safety Features- Over-temperature protection and insulated body for operator safety.
- Versatile Applications - Suitable for drying, heat-setting, shrinkage testing, and chemical finish evaluations.
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
