Fangyuan Instruments Y571 Series Crockmeter

Overview

The Fangyuan Instruments Y571 Series Crockmeter is a precision-engineered instrument designed to evaluate the color fastness of textiles, leather, coated metals, and printed materials under mechanical abrasion. It operates on the principle of controlled reciprocating motion, where a standardized white test cloth—either dry or moistened with water or specified organic solvents—is rubbed against the surface of a dyed or printed specimen under defined normal force and stroke parameters. The degree of color transfer onto the white cloth is assessed visually using standardized grey scales (e.g., ISO 105-A02 or AATCC Evaluation Procedure 1), providing a quantitative rating from 1 (poor) to 5 (excellent). This method directly simulates real-world wear conditions such as garment rubbing, upholstery contact, or industrial handling, making it indispensable for quality assurance in textile manufacturing, dye house validation, and regulatory compliance testing.

Key Features

• Multi-model configuration (Y571B, Y571C, Y571D, Y571M) supporting both automated and manual operation modes to accommodate varying lab workflows and throughput requirements.
• Precisely regulated mechanical drive system delivering consistent 60 reciprocating cycles per minute with a fixed stroke length of 104 mm—ensuring high inter-laboratory reproducibility per ISO/IEC 17025 requirements.
• Standardized 9 N normal load applied via calibrated spring or dead-weight mechanism, compliant with ISO 105-X12 and AATCC 8 specifications for dry and wet crocking tests.
• Interchangeable friction heads: Ø16 mm cylindrical head for general-purpose testing and 19 × 25 mm rectangular head for larger-area or structured fabric evaluation; optional standard brush attachment included for specialized surface conditioning per GB/T 5712-2008.
• Digital cycle counter with programmable range (up to 99,999 cycles on Y571M) enables precise replication of accelerated wear protocols and long-duration durability assessments.
• Robust aluminum alloy frame and corrosion-resistant surface finish ensure long-term dimensional stability and resistance to solvent exposure during wet testing procedures.

Sample Compatibility & Compliance

The Y571 Series accommodates flat, flexible specimens up to 150 mm × 50 mm, including woven and knitted fabrics, nonwovens, synthetic leathers, anodized aluminum sheets, and digitally printed polymer films. Its design conforms rigorously to internationally harmonized test standards, including GB/T 3920-2008 (equivalent to ISO 105-X12), GB/T 5712-2008 (equivalent to ISO 105-D02), and AATCC Test Method 8. These standards define strict tolerances for specimen mounting, humidity conditioning (65 ± 2% RH, 20 ± 2°C), moisture content of wet cloths (distilled water or specified solvent), and post-test evaluation methodology. The instrument supports full traceability documentation required for GLP-compliant laboratories and satisfies audit criteria under ISO/IEC 17025:2017 Clause 6.4 (Equipment).

Software & Data Management

While the Y571B/C/D models feature standalone electromechanical control without embedded software, they integrate seamlessly into laboratory information management systems (LIMS) via analog output signals (e.g., cycle completion pulse) or optional digital I/O modules (RS-232 or USB-serial adapter, sold separately). All models support full manual logging in accordance with FDA 21 CFR Part 11 Annex 11 principles—requiring handwritten records signed and dated by authorized personnel, with clear linkage to raw test cloths, grey scale evaluations, and environmental monitoring logs. For high-volume QC environments, Fangyuan provides template Excel-based reporting tools aligned with ISO 105-X12 Annex A, facilitating structured data entry, statistical process control (SPC) charting, and trend analysis across batches.

Applications

• Quality control of reactive, vat, and disperse dyeings on cotton, polyester, nylon, and blended substrates.
• Validation of pigment printing pastes and binder systems used in sportswear and technical textiles.
• Assessment of color migration resistance in coated leather and PVC-based automotive interiors.
• Pre-shipment testing for export markets requiring compliance with EU REACH Annex XVII restrictions on azo dyes and heavy metal migration.
• Research and development of novel nano-finishes and anti-migration coatings for high-performance apparel.
• Third-party certification testing accredited under CNAS (China National Accreditation Service) and ILAC-MRA signatory bodies.

FAQ

What standards does the Y571 Series comply with?
The instrument meets the mechanical and operational requirements of GB/T 3920-2008, GB/T 5712-2008, ISO 105-X12, ISO 105-D02, and AATCC 8. Calibration verification templates and standard reference cloths are available upon request.
Is wet crocking testing supported?
Yes—each model supports both dry and wet testing. Wet specimens require pre-conditioning with distilled water or solvent per ISO 105-X12 Section 7.2; the white crocking cloth must be dampened to 100% saturation and weighed immediately prior to test initiation.
Can the Y571 Series be used for non-textile substrates?
Absolutely. It is routinely employed for evaluating color rub-off on painted metal panels, laminated signage, and flexographic-printed packaging films—provided specimens meet minimum flatness and thickness specifications (0.2–5 mm).
How often should the friction head be replaced?
The cylindrical Ø16 mm head should be inspected after every 500 test cycles for surface wear or deformation; replacement is recommended after 2,000 cycles or if visible scoring is observed. Rectangular heads require similar periodic inspection.
Does Fangyuan provide calibration services?
Yes—certified calibration kits (including traceable load cells and stroke gauges) and on-site verification services are offered globally through authorized service partners, with documentation issued per ISO/IEC 17025 requirements.