SDL Atlas M232P Impact Water Penetration Tester

Overview

The SDL Atlas M232P Impact Water Penetration Tester is a precision-engineered instrument designed to quantitatively evaluate the resistance of textile fabrics to water penetration under controlled vertical impact conditions. It operates on the principle of standardized hydrostatic冲击 (impact-driven) water exposure—where a defined volume (500 mL) of distilled or deionized water is released from a calibrated funnel onto a horizontally mounted, taut fabric specimen. The test measures the mass of water that passes through the fabric and is retained by a pre-weighed absorbent blotting paper placed beneath the sample. This gravimetric endpoint provides an objective, repeatable metric for assessing rain-repellent performance in outerwear, technical workwear, military uniforms, and functional sportswear. The instrument conforms strictly to AATCC Test Method 42–2023 (“Water Resistance: Impact Penetration”), a globally recognized standard used by textile laboratories, quality control departments, and certification bodies for evaluating water repellency where dynamic exposure—not static pressure—is the dominant failure mode.

Key Features

• Robust stainless-steel structural frame with integrated leveling base featuring dual-axis bubble level indicators for precise horizontal alignment—critical for consistent water dispersion and test repeatability.
• Calibrated 500 mL brass funnel with precision-machined baffle leaf to eliminate vortex formation and ensure laminar, non-turbulent water release onto the specimen surface.
• Dual-action specimen clamp assembly: upper clamping bar and weighted lower jaw (standardized mass per AATCC 42) ensure uniform tensioning and wrinkle-free mounting of 152 mm × 152 mm (6″ × 6″) fabric specimens.
• Rotatable absorbent paper holder accommodating SDL Atlas-certified 152 mm × 229 mm (6″ × 9″) filter papers—supplied in packs of 250 or 1500 sheets—designed for optimal water retention and minimal lateral wicking during gravimetric analysis.
• Integrated drip collector with pivot mechanism allows rapid repositioning post-test; retains residual runoff to prevent cross-contamination and ensures accurate volumetric delivery in subsequent tests.
• Modular design supports routine calibration verification, ISO/IEC 17025-compliant maintenance logs, and traceable instrument qualification (IQ/OQ).

Sample Compatibility & Compliance

The M232P accommodates woven, knitted, nonwoven, laminated, and coated textile substrates—including membrane-laminated waterproof/breathable fabrics (e.g., Gore-Tex®, eVent®, Sympatex®). Specimens must be conditioned per ASTM D1776 and AATCC TM20 specifically at 21 ± 1°C and 65 ± 2% RH for minimum 4 hours prior to testing. The system meets all mechanical and procedural requirements of AATCC TM42–2023 and is referenced in ISO 4920:2012 (“Textiles — Resistance to penetration by water — Impact penetration test”) for comparative international reporting. While not FDA-regulated, its design supports GLP-aligned documentation workflows required for third-party audit readiness (e.g., UL, SGS, Bureau Veritas).

Software & Data Management

The M232P is a manually operated, non-digital instrument; no embedded firmware or proprietary software is included. All measurements are recorded manually using calibrated analytical balances (0.01 g resolution recommended) and documented in laboratory notebooks or LIMS-integrated spreadsheets. Users may integrate results into validated electronic data capture systems compliant with 21 CFR Part 11 via external audit-trail-enabled platforms—provided balance outputs are timestamped, user-authenticated, and backed by version-controlled SOPs. SDL Atlas provides full technical documentation, including calibration checklists, preventive maintenance schedules, and AATCC 42 reference test reports for method validation.

Applications

• Quality assurance of rainwear, windbreakers, and high-performance outdoor apparel.
• R&D evaluation of durable water repellent (DWR) finish efficacy and durability after laundering or abrasion cycles.
• Comparative benchmarking of hydrophobic coatings, nanofinishing treatments, and plasma-modified surfaces.
• Supplier qualification and incoming material inspection per brand-specific technical specifications (e.g., Nike APM, Adidas TSC, VF Corp. QMS).
• Supporting compliance claims for EN 343 (protective clothing against rain) and ISO 20230 (water resistance classification of technical textiles).

FAQ

What standards does the M232P support?
It is fully compliant with AATCC Test Method 42–2023 and ISO 4920:2012.
Is operator training required?
Yes—proper specimen mounting tension, funnel alignment, and blotting paper handling directly affect result reproducibility; SDL Atlas offers on-site or virtual technician training upon request.
Can the instrument be used for non-textile materials?
While not validated for non-fabrics, some users apply it to thin polymer films or geotextiles under internal method development; such use requires full re-validation per ISO/IEC 17025 Clause 7.2.2.
What maintenance is recommended?
Daily visual inspection of funnel orifice, weekly cleaning of stainless-steel surfaces with ethanol, and quarterly verification of leveling bubble accuracy using a certified inclinometer.
Does SDL Atlas provide calibration services?
Yes—traceable calibration certificates (NIST-traceable mass and dimensional standards) are available as an optional service with annual or biannual scheduling.