Drick DRK-LX Dry-State Linting Tester for Nonwovens

Overview

The Drick DRK-LX Dry-State Linting Tester is a precision-engineered instrument designed to quantify fiber shedding—commonly referred to as linting or particulate release—from nonwoven materials under dry, mechanically stressed conditions. It operates in strict accordance with ISO 9073-10, the internationally recognized standard for determining airborne fiber debris generated during dynamic mechanical agitation of nonwovens. The test principle is based on controlled torsional-compressive deformation: a standardized specimen (220 ± 1 mm × 285 ± 1 mm) is cyclically twisted through 180° and axially compressed over a 120 mm stroke at 60 cycles per minute inside an enclosed test chamber. Concurrently, air is drawn at a calibrated volumetric flow rate of 28.3 L/min (±5%) through the chamber via an isokinetic sampling probe. Released particles are captured in real time by a high-sensitivity laser particle counter, enabling size-resolved quantification across multiple discrete channels (e.g., 0.3, 0.5, 1.0, 3.0, 5.0, 7.0, 10.0, and 25.0 µm). This method provides objective, repeatable data essential for evaluating material integrity, cleanliness performance, and suitability for regulated environments—including medical device packaging, surgical gowns, drapes, and cleanroom wipes.

Key Features

• Compliant mechanical actuation system delivering precise 180° torsion + 120 mm linear compression at 60 cycles/minute
• Dual-mode specimen holder with one fixed clamp and one reciprocating clamp (diameter: 82.8 mm), ensuring consistent loading geometry
• Integrated test chamber with defined collection volume (300 mm × 300 mm × 300 mm) and sealed airflow path to prevent ambient contamination
• Modular laser particle counter compatibility: supports both 3100+ (6–8 channel options) and 5100+ (6–8 channel options) configurations, including CB (calibration bracket) variants for enhanced traceability
• Dedicated cutting template (285 mm × 220 mm) ensures dimensional accuracy and inter-laboratory reproducibility of specimens
• Configurable electrical input: 220/240 VAC @ 50 Hz or 110 VAC @ 60 Hz for main unit; particle counter accepts universal 85–264 VAC @ 50/60 Hz
• Onboard timer (1–9999 cycles) and internal memory for up to 3,000 test records, supporting audit-ready data retention

Sample Compatibility & Compliance

The DRK-LX is validated for use with raw nonwoven substrates—including spunbond, meltblown, needlepunched, and composite laminates—as well as finished medical textiles such as surgical gowns, drapes, and face masks. Its test protocol satisfies requirements specified in ISO 9073-10, INDA IST 160.1 (for cleanroom-compatible nonwovens), DIN EN 13795-2 (surgical drapes and gowns), and YY/T 0506.4 (Chinese national standard for patient and healthcare personnel protective equipment). All mechanical and airflow parameters are traceable to SI units, and the system architecture supports GLP/GMP-aligned documentation workflows when paired with compliant software and electronic signatures.

Software & Data Management

While the base DRK-LX operates via embedded firmware with local display and manual data export (e.g., via USB or RS-232), optional software packages enable full integration into laboratory information management systems (LIMS). These tools support automated report generation compliant with FDA 21 CFR Part 11 requirements—including user authentication, electronic signatures, and immutable audit trails for all test parameters, raw particle counts, and pass/fail determinations. Data output includes tabular summaries per channel, cumulative distribution curves, and batch-level statistical analysis (mean, SD, CV%) across replicate runs.

Applications

• Quality control of raw nonwoven rolls prior to conversion into medical devices or hygiene products
• Comparative evaluation of fiber bonding efficacy across different thermal, chemical, or mechanical bonding processes
• Validation of low-linting performance for cleanroom garments, filtration media, and semiconductor wipe materials
• Regulatory submission support for ISO 13485-certified manufacturers seeking CE marking or FDA 510(k) clearance
• Root cause analysis of particulate contamination events in sterile packaging lines or Class 7/8 cleanrooms

FAQ

What standards does the DRK-LX directly support?
ISO 9073-10, INDA IST 160.1, DIN EN 13795-2, and YY/T 0506.4.
Can the particle counter be upgraded post-purchase?
Yes—modular design allows field replacement or upgrade of the laser particle counter to higher-channel-count or calibration-bracket (CB) models.
Is sample preparation fully standardized?
Yes—the included stainless-steel cutting template ensures consistent 220 mm × 285 mm specimen dimensions per ISO 9073-10.
How is airflow velocity verified during operation?
Via isokinetic sampling probe and adapter kit, which maintains constant velocity profile across the intake aperture—critical for representative particle capture efficiency.
Does the system meet electromagnetic compatibility (EMC) requirements for laboratory use?
Yes—complies with IEC 61326-1 for industrial, scientific, and medical (ISM) equipment in laboratory environments.