Saicheng ZDY-02 Lipstick Break Force & Hardness Tester

Overview

The Saicheng ZDY-02 Lipstick Break Force & Hardness Tester is a precision mechanical testing instrument engineered for objective, repeatable quantification of mechanical integrity in cosmetic lipstick formulations. It operates on the principle of controlled axial compression or bending deformation under defined jaw geometry and displacement rate, measuring the peak force (in newtons) required to fracture or deform a standardized lipstick sample. This measurement directly correlates with consumer-perceived hardness, structural stability during application, resistance to breakage during packaging and transport, and consistency across production batches. Designed in strict alignment with ASTM D1321 “Standard Test Method for Penetration of Lubricating Grease” — adapted for cosmetic solid dosage forms — the ZDY-02 delivers metrologically traceable results essential for QC laboratories, R&D validation, and regulatory documentation in cosmetics manufacturing.

Key Features

• High-fidelity force measurement using an imported strain-gauge load cell, calibrated to Class 0.5 accuracy per ISO 376, ensuring long-term repeatability and minimal hysteresis.
• Dual jaw spacing options (36 mm and 60 mm) accommodate standard lipstick diameters (typically 8–12 mm) while maintaining consistent moment arm geometry for comparative testing across formulations.
• Infinitely variable pre-travel speed (1–500 mm/min) enables precise positioning and eliminates operator-induced preload artifacts prior to active testing.
• Programmable test speed (default 10 mm/min) conforms to ASTM D1321’s recommended displacement rate for penetration-type hardness evaluation, supporting method transfer and inter-laboratory comparability.
• Integrated thermal micro-printer provides immediate hard-copy output of peak force, displacement at break, and test timestamp — eliminating manual transcription errors.
• Modular, tool-free interchangeable fixtures ensure rapid adaptation to alternative cylindrical samples (e.g., lip balms, solid perfumes, or pharmaceutical suppositories) without recalibration.
• Robust mechanical architecture features precision-ground lead screws, linear guide rails, and reinforced aluminum alloy frame — optimized for >100,000 test cycles with minimal maintenance.
• Intelligent safety logic includes hardware-based end-stop limits, automatic motor shutdown upon overload detection, and programmable return-to-home sequence post-test.

Sample Compatibility & Compliance

The ZDY-02 is validated for use with cylindrical, thermoplastic solid cosmetics conforming to typical industry dimensions (diameter 7–14 mm, length ≥40 mm). Its test methodology satisfies functional equivalency requirements referenced in ISO 22716 (Cosmetics — Good Manufacturing Practices), supports internal SOP development aligned with ICH Q5E (Comparability of Biotechnological/Biological Products), and generates auditable data suitable for FDA 21 CFR Part 11-compliant environments when paired with Saicheng’s optional validated PC software package (v3.2+). All mechanical components comply with RoHS Directive 2011/65/EU. Calibration certificates are traceable to NIM (National Institute of Metrology, China) standards.

Software & Data Management

The optional Saicheng TestMaster™ PC software (Windows 10/11 compatible) provides GLP-compliant data acquisition, storage, and analysis. Functions include real-time force-displacement curve visualization, statistical reporting (mean, SD, CV%, min/max), batch-level trending, user access control with role-based permissions, electronic signature support, and full audit trail logging (user actions, parameter changes, calibration events). Export formats include CSV, PDF, and XML for integration into LIMS or ERP systems. Software validation documentation (IQ/OQ/PQ protocols) is available upon request for regulated facilities.

Applications

• Quality control release testing of finished lipstick batches against internal hardness specifications.
• R&D screening of wax-to-oil ratios, filler content, and cooling rate effects on mechanical performance.
• Stability studies assessing hardness drift over accelerated aging (40 °C/75% RH) or real-time storage conditions.
• Supplier qualification of raw materials (e.g., carnauba wax, candelilla wax, synthetic waxes) based on contribution to final product rigidity.
• Failure analysis of broken units in distribution — correlating field complaints with lab-measured break force thresholds.
• Regulatory submission support for dossier packages requiring physical property characterization (e.g., ASEAN Cosmetic Directive Annex II, EU CPNP notifications).

FAQ

Does the ZDY-02 comply with international regulatory standards for cosmetics testing?
Yes — its test protocol aligns functionally with ASTM D1321 and supports generation of data suitable for ISO 22716 and ASEAN CD compliance; full validation documentation is available for GMP-regulated users.
Can the instrument test non-lipstick samples such as lip balms or solid perfumes?
Yes — the modular fixture system allows adaptation to any cylindrical solid with diameter between 7 mm and 14 mm; minor adjustments to jaw spacing and test speed may be required.
Is calibration traceable to national metrology institutes?
All factory calibrations are traceable to NIM (China) via certified reference load cells; annual recalibration services with NIM-traceable certificates are offered.
What data security features does the PC software provide?
TestMaster™ v3.2+ includes 21 CFR Part 11-compliant audit trails, electronic signatures, user authentication, and encrypted local database storage.
How often does mechanical maintenance require intervention?
Under normal QC lab usage (≤50 tests/day), lead screw lubrication and sensor zero-check are recommended every 6 months; no scheduled replacement parts are required within first 3 years.