HengaoDe MA35 Infrared Moisture Analyzer
| Brand | HengaoDe |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | General Distributor |
| Country of Origin | China |
| Model | MA35 |
| Price | USD 85 |
| Maximum Sample Capacity | 35 g |
| Readability | 1 mg |
| Moisture Resolution | 0.01 % |
| Moisture Display Modes | % moisture, % dry weight (solids), % ratio, g residue |
| Heating Temperature Range | 40–160 °C (1 °C increments) |
| Heating Element | Metal-sheathed IR heater with Plug&Dry®-style extraction design |
| Compliance | FDA/HACCP-compliant sample chamber (V2-series models only) |
| Dimensions (W×D×H) | 224 × 366 × 191 mm |
| Weight | 5.8 kg |
Overview
The HengaoDe MA35 Infrared Moisture Analyzer is a benchtop thermal gravimetric instrument engineered for rapid, reliable quantification of moisture content in solid and semi-solid samples using infrared drying technology. It operates on the principle of loss-on-drying (LOD): a precisely weighed sample is exposed to controlled IR radiation from a metal-sheathed heating element, inducing evaporation of volatile components—primarily water—while an integrated high-resolution balance continuously monitors mass loss in real time. The endpoint is determined automatically based on user-defined criteria (e.g., time-based or slope-based termination), and moisture content is calculated as a percentage relative to initial mass. Designed for routine quality control in food, pharmaceutical, chemical, and materials laboratories, the MA35 delivers consistent results under standardized conditions aligned with ASTM D4457, ISO 12099, and USP <921> guidelines for moisture determination.
Key Features
- High-precision weighing system with 1 mg readability and 35 g maximum capacity, ensuring reproducible sample loading across analytical batches.
- Adjustable IR heating profile (40–160 °C in 1 °C steps) enables method optimization for thermally sensitive or refractory matrices without charring or decomposition artifacts.
- FDA/HACCP-compliant sample chamber (standard on V2-series units) features a hinged lid and smooth stainless-steel interior, facilitating cleaning and minimizing cross-contamination risk in regulated environments.
- Intuitive menu-driven interface with symbolic prompts supports operation without prior training; no password protection or complex calibration routines required for daily use.
- Single-program storage capability allows users to save and recall one validated method—including temperature setpoint, drying duration, and display format—for repeat analysis of identical sample types.
- Robust mechanical architecture with vibration-dampening base and compact footprint (224 × 366 × 191 mm) ensures stable performance on shared lab benches.
Sample Compatibility & Compliance
The MA35 accommodates a broad range of homogeneous particulate, granular, and powdered materials—including powders, pellets, flakes, and pastes—with typical initial sample masses between 1 g (±0.2 g tolerance) and 5 g (±0.05 g tolerance). Its open-chamber design permits direct placement of samples on the aluminum sample pan without pre-packing or pressing, preserving natural particle distribution. While not certified to EC Type Approval standards, the instrument meets functional requirements outlined in ISO/IEC 17025 for moisture testing laboratories conducting internal method validation. All firmware and hardware configurations comply with electromagnetic compatibility (EMC) Directive 2014/30/EU and Low Voltage Directive 2014/35/EU when operated within specified ambient conditions (5–40 °C, ≤85% RH).
Software & Data Management
The MA35 employs embedded firmware with no external software dependency. Measurement data—including initial mass, final mass, moisture %, dry weight %, and residual mass—are retained in volatile memory until overwritten by the next test. Results are displayed in real time on a backlit LCD screen and may be exported via optional RS-232 or USB-to-serial adapter to external printers or laboratory information management systems (LIMS). Although the device lacks built-in audit trail functionality or 21 CFR Part 11 compliance features (e.g., electronic signatures, user-level access control), its deterministic measurement logic and fixed parameter set support GLP-aligned documentation when paired with manual logbook entries or timestamped printouts.
Applications
This analyzer is routinely deployed in QC labs for incoming raw material verification (e.g., starch, flour, dairy powders), in-process moisture monitoring during drying or granulation steps, and finished-product release testing per pharmacopeial monographs. It supports rapid screening of hygroscopic excipients in tablet formulation development, moisture profiling of polymer resins prior to extrusion, and batch consistency checks for roasted coffee, tea leaves, and herbal extracts. Its simplicity and speed make it especially suitable for high-throughput environments where turnaround time—not ultra-trace sensitivity—is the primary performance criterion.
FAQ
Does the MA35 include internal calibration weights?
No. Internal calibration requires external Class M2 or better weights traceable to national standards.
Can the instrument measure non-aqueous volatiles?
Yes—though reported values are labeled “moisture” by default, the LOD result reflects total volatile loss; method validation is required to distinguish water from solvents or low-MW organics.
Is the heating unit replaceable in the field?
Yes—the metal-sheathed IR heater assembly is a modular component with standardized mounting and electrical interfaces.
What maintenance is recommended for long-term accuracy?
Daily cleaning of the sample pan and chamber with lint-free cloth; annual verification of balance linearity and temperature uniformity using NIST-traceable reference materials.
Is the MA35 compatible with LIMS integration?
Yes—via serial output (RS-232) using standard ASCII protocol; custom parsing scripts may be required depending on LIMS vendor specifications.
