SMS AHCR Hair Combing Analyzer

Overview

The SMS AHCR Hair Combing Analyzer is a precision-engineered physical property testing instrument designed specifically for quantitative assessment of hair combability — a critical functional parameter in the development and quality control of hair care formulations. Based on controlled mechanical displacement and real-time force transduction, the system replicates standardized combing motion using a motorized arm and calibrated toothed comb probe. As the probe traverses a standardized hair tress under programmable speed and load conditions, the instrument continuously records resistive force (in mN or gf), displacement (mm), time (s), and derived mechanical parameters including stress, strain, and energy dissipation. This measurement principle aligns with established rheomechanical models for fibrous biomaterials and enables objective, repeatable quantification of surface friction reduction, cuticle integrity, and lubricity imparted by shampoos, conditioners, leave-in treatments, and styling agents.

Key Features

• Motor-driven combing cycle with programmable bidirectional motion: downward stroke (combing phase), retraction, and return to start position — fully replicating manual combing biomechanics.
• Multi-range load cells (±0.5 kg, ±5 kg, ±30 kg, ±50 kg) ensure high-resolution force detection across low-friction (e.g., silicone-treated hair) and high-resistance (e.g., damaged, dry hair) conditions.
• Precise speed control from 0.01 to 40 mm/s supports both slow-scan compliance evaluation and rapid throughput screening.
• Stroke distance adjustable from 0.001 to 370 mm, enabling adaptation to diverse hair lengths and experimental protocols.
• Integrated environmental monitoring: simultaneous logging of ambient temperature and relative humidity during test execution — essential for GLP-compliant method validation.
• Automated force calibration routine compliant with ISO 7500-1:2018; uses traceable external weights and performs internal self-diagnostic verification prior to each test sequence.
• Rugged aluminum frame and precision-ground linear guides ensure long-term dimensional stability and mechanical reproducibility (CV < 1.2% across ≥100 repeated tests).

Sample Compatibility & Compliance

The AHCR accommodates standardized hair tresses (typically 20–50 strands, 15–25 cm length, pre-conditioned per ISO 15831 or AACC Method 10–15.01). It supports synthetic fiber bundles for reference calibration and cross-laboratory intercomparison studies. The system conforms to multiple internationally recognized standard methods, including ASTM D8225 (hair conditioning efficacy), AACC 10–15.01 (hair combing resistance), AOAC 992.12 (shampoo performance), and ISO 17276 (cosmetic product functional testing). All test protocols are documented to support 21 CFR Part 11-compliant audit trails when used with validated software configurations. Instrument design meets IEC 61000-6-3 EMC requirements and CE marking standards for laboratory equipment.

Software & Data Management

The TA.XT-based control and analysis software provides full method scripting, real-time force–displacement curve visualization, and automated calculation of key metrics: peak combing force (PCF), work of combing (WOC), coefficient of friction (COF), and hysteresis area. Raw data export is supported in CSV, Excel, and XML formats. Audit-ready features include user access levels, electronic signatures, version-controlled method libraries, and timestamped change logs — facilitating GMP/GLP-aligned documentation workflows. The bilingual interface (English/Chinese) ensures seamless adoption across global R&D teams. Data synchronization with LIMS via ODBC or REST API is configurable upon request.

Applications

• Quantitative comparison of pre- vs. post-wash combability for shampoo and conditioner claims substantiation (e.g., “50% easier to comb”)
• Evaluation of cationic polymer deposition efficiency and film-forming agent performance
• Stability assessment of emulsion-based treatments under accelerated aging or thermal cycling
• Correlation of instrumental combability data with sensory panel outcomes (e.g., trained assessor scores)
• Formulation optimization of anti-frizz actives, silicones, and natural oils
• Regulatory dossier preparation for EU Cosmetics Regulation (EC No 1223/2009) and FDA OTC Monograph submissions
• Material compatibility testing for hair dye carriers, keratin treatments, and heat-activated styling products

FAQ

What hair sample preparation protocols are recommended for reproducible results?
Standardized tress preparation per ISO 15831 is required: 30 ± 2 strands, 20 cm length, washed with reference shampoo (e.g., SLS-based), air-dried at 23 ± 2 °C / 50 ± 5% RH for 16 h prior to testing.
Can the AHCR be used for wet-combing evaluation?
Yes — optional humidity-controlled test chamber accessory (sold separately) enables testing at defined RH levels up to 95%, supporting wet-comb protocols aligned with ASTM D8225 Annex A1.
Is third-party certification available for method validation?
SMS provides IQ/OQ documentation packages and supports vendor-qualified calibration services accredited to ISO/IEC 17025 by UKAS-certified laboratories.
How does the AHCR integrate with existing QC lab infrastructure?
RS232 and USB interfaces support direct connection to Windows-based lab PCs; optional Ethernet module enables network deployment and remote monitoring via secure HTTPS.
Are application notes and SOP templates included with purchase?
Yes — all systems ship with a comprehensive Technical Manual, ASTM/AACC-compliant SOP templates, raw data interpretation guidelines, and access to the SMS Application Support Portal containing >60 peer-reviewed case studies.