DRK110 Touchscreen Sanitary Napkin Liquid Absorption Rate Tester
| Brand | Drick |
|---|---|
| Origin | Shandong, China |
| Manufacturer Type | Direct Manufacturer |
| Product Category | Domestic |
| Model | DRK110 Touchscreen |
| Price | USD 7,000 (approx.) |
Overview
The DRK110 Touchscreen Sanitary Napkin Liquid Absorption Rate Tester is a dedicated benchtop instrument engineered for quantitative evaluation of liquid uptake kinetics in feminine hygiene products—including sanitary napkins, panty liners, and postpartum pads. It operates on the principle of gravimetric time-series measurement: a standardized synthetic menstrual fluid (or saline solution per ISO 13784 or EDANA Recommended Test Method 90.1) is applied to the sample surface under controlled conditions, and the mass gain is recorded at programmable intervals (e.g., 15 s, 30 s, 60 s, 120 s) using a high-resolution analytical balance integrated into the system. The instrument calculates absorption rate (g/s or g/30s), cumulative absorption capacity (g), and time-to-saturation—parameters critical for product development, quality control, and regulatory benchmarking in personal care manufacturing.
Key Features
- Intuitive 7-inch capacitive touchscreen interface with multilingual OS support (English preconfigured), enabling standalone operation without external PC.
- Integrated precision balance (0.001 g resolution, ±0.005 g repeatability) synchronized with timed dispensing and data logging.
- Automated liquid dosing module delivering consistent volume (e.g., 25 mL ±0.5 mL) via peristaltic pump or gravity-fed reservoir with flow calibration traceability.
- Modular sample holder accommodating standard test specimens (e.g., 100 mm × 100 mm per EDANA RTM 90.1) with adjustable clamping pressure to prevent edge wicking artifacts.
- Real-time graphing of mass vs. time curves during testing; automatic calculation of initial absorption rate (first 30 s slope), peak absorption velocity, and plateau onset time.
- Rugged aluminum-alloy frame with chemical-resistant coating; designed for continuous use in QC laboratories operating under ISO/IEC 17025-aligned environments.
Sample Compatibility & Compliance
The DRK110 supports testing of absorbent core materials including fluff pulp, superabsorbent polymers (SAP), airlaid nonwovens, and composite laminates. It complies with methodological frameworks referenced in international standards: EDANA Recommended Test Method 90.1 (Liquid Acquisition Time), ISO 13784:2015 (Determination of absorption rate of sanitary towels), and GB/T 28003–2011 (Chinese national standard for sanitary napkin performance). While not certified to ISO/IEC 17025 itself, the instrument’s design facilitates method validation and uncertainty budgeting required for GLP-compliant reporting. All test protocols are fully documentable for internal audit or customer-facing regulatory submissions.
Software & Data Management
Data acquisition and analysis are managed through embedded firmware with export capability to CSV and PDF formats. Each test record includes timestamp, operator ID, environmental conditions (optional ambient temperature/humidity input), sample ID, and raw mass-vs.-time point data. Audit trail functionality logs all parameter modifications and test executions—supporting basic 21 CFR Part 11 readiness when deployed on secured networks with user role management (admin/operator). Raw datasets are compatible with third-party statistical tools (e.g., JMP, Minitab) for SPC charting, capability analysis (Cpk), and DOE correlation studies across raw material lots or production shifts.
Applications
- Formulation screening: Quantifying impact of SAP particle size distribution or binder concentration on early-stage wicking velocity.
- Supplier qualification: Benchmarking incoming absorbent sheet batches against release specifications for absorption rate consistency (±5% RSD target).
- Process validation: Correlating converting line parameters (e.g., embossing depth, adhesive pattern density) with functional absorption metrics.
- Competitive benchmarking: Cross-product comparison against market leaders using harmonized test conditions per EDANA guidelines.
- Regulatory dossier preparation: Generating repeatable, instrument-traceable data for registration dossiers submitted to NMPA, Health Canada, or notified bodies under CE marking pathways for Class I medical devices.
FAQ
What synthetic test fluid is recommended for routine testing?
EDANA RTM 90.1 specifies a saline solution (0.9% NaCl in deionized water); alternative fluids (e.g., hemoglobin-doped simulants) may be used with protocol validation.
Can the DRK110 measure absorption under pressure (e.g., simulating body weight)?
No—the standard configuration evaluates free-surface absorption only. Optional add-on compression fixtures are available upon request for modified ISO 13784 Annex B protocols.
Is calibration certificate included with shipment?
Yes—a factory-issued balance calibration report (traceable to NIM, China) is provided; users must perform periodic verification using certified weights per ISO 9001 internal audit requirements.
What maintenance is required for long-term accuracy?
Monthly cleaning of fluid pathways and sample chamber; annual recalibration of balance and dispensing volume by authorized Drick service engineer.
Does the system support networked data transfer to LIMS?
Native Ethernet port enables FTP-based file push; API integration requires custom middleware development—contact Drick Technical Support for SDK documentation.
