SDLATLAS PermaVape M261P Moisture Vapor Transmission Rate (MVTR) Tester
| Brand | SDLATLAS |
|---|---|
| Origin | Shenzhen, China |
| Manufacturer Type | Original Equipment Manufacturer (OEM) |
| Regional Classification | Domestic (China) |
| Model | M261P |
| Pricing | Available Upon Request |
Overview
The SDLATLAS PermaVape M261P is a precision-engineered Moisture Vapor Transmission Rate (MVTR) tester designed specifically for textile, nonwoven, and flexible packaging materials. It operates on the inverted cup (or “upside-down cup”) method—recognized in ISO 15496:2004 Annex C as a superior alternative to desiccant-based cup methods for its enhanced control over boundary conditions and reduced measurement uncertainty. In this configuration, the test specimen is sealed over the open mouth of a temperature-controlled test cup containing distilled water, and the entire assembly is inverted so that the sample faces downward. Water vapor diffuses through the material under a defined temperature (typically 23 °C) and relative humidity gradient, and mass change is monitored gravimetrically over time. The M261P implements strict thermal uniformity across all six test positions via integrated heating elements and a recirculating pump, ensuring compliance with ISO 15496, ASTM E96/E96M (inverted procedure), and GB/T 12704.1–2018 requirements for reproducible MVTR quantification.
Key Features
- Six-position test platform with independent cup-level thermal regulation—each cup maintains ±0.3 °C stability at 23 °C via PID-controlled heating and internal fluid circulation.
- Adjustable sample holder mechanism enabling precise vertical positioning of specimens to ensure consistent immersion depth and seal integrity across diverse fabric thicknesses and stiffness profiles.
- Integrated gravimetric monitoring interface compatible with high-resolution analytical balances (not included) supporting automated data logging at user-defined intervals (e.g., every 30 min or 1 h).
- Compliant with ISO 15496 Annex C methodology—provides traceable, physics-based validation of diffusion-driven vapor transport without desiccant saturation artifacts or edge-effect interference.
- Modular consumable design: uses dual-film sealing system per test; each test requires two certified barrier films to isolate environmental fluctuations and define controlled vapor path geometry.
Sample Compatibility & Compliance
The M261P accommodates woven, knitted, coated, laminated, and hydrophobic/hydrophilic textile substrates up to 300 mm × 300 mm in dimension and ≤15 mm in thickness. Sample clamping utilizes stainless-steel gaskets and calibrated torque screws to guarantee leak-free sealing without compressive distortion. All mechanical and thermal subsystems are validated against ISO/IEC 17025:2017 general requirements for testing laboratories. Test reports generated using the M261P support audit readiness for ISO 9001, ISO 14001, and GMP-aligned quality systems when paired with GLP-compliant balance integration and electronic lab notebook (ELN) linkage.
Software & Data Management
While the M261P operates as a hardware platform requiring external balance and data acquisition, it is engineered for seamless integration with industry-standard laboratory software environments. Raw mass-time datasets export in CSV or Excel-compatible formats for post-processing using proprietary or third-party tools (e.g., MATLAB, Python Pandas, or dedicated MVTR calculation modules). When used with balances supporting RS232/USB output and compliant with FDA 21 CFR Part 11, full audit trails—including operator ID, timestamped weight readings, calibration logs, and environmental metadata—can be maintained. Optional SDK support enables custom scripting for automated slope analysis, Arrhenius modeling, and statistical process control (SPC) charting.
Applications
- Quality assurance of breathable membranes in sportswear, medical gowns, and protective workwear.
- R&D evaluation of moisture management performance in smart textiles incorporating phase-change materials or hydrophilic coatings.
- Regulatory submission support for FDA-cleared wound dressings and ISO 13485-certified medical textiles.
- Benchmarking comparative MVTR performance between competing laminate structures under standardized climatic conditions.
- Process validation for coating line parameters affecting film continuity and pore distribution in microporous membranes.
FAQ
What standards does the M261P directly support?
ISO 15496:2004 (Annex C), ASTM E96/E96M (Procedure B – Inverted Cup), GB/T 12704.1–2018, and JIS L 1099:2012 (Method A-1).
Is the test film included with the instrument?
Yes—each unit ships with one pack of 50 certified dual-layer barrier films, sufficient for 25 complete tests (2 films per test). Additional films are available as consumable SKUs.
Can the M261P operate outside 23 °C?
The system is calibrated and validated for 23 °C ±0.5 °C per ISO 15496; operation at other temperatures requires user-developed thermal validation protocols and is not covered under factory warranty or metrological certification.
Does the instrument include a balance or data logger?
No—the M261P is a test platform only. Users must supply a Class I analytical balance (minimum 0.1 mg readability, ≥200 g capacity) and compatible data acquisition hardware/software.
How is temperature uniformity verified across all six cups?
Each cup contains an embedded PT100 sensor; system diagnostics log real-time temperature differentials and trigger alerts if inter-cup deviation exceeds ±0.4 °C during stabilization or test runtime.
