SH10A Rapid Moisture Analyzer

Overview

The SH10A Rapid Moisture Analyzer is a gravimetric moisture determination instrument engineered for routine quality control laboratories requiring fast, reliable, and operator-independent quantification of free (surface and loosely bound) moisture in solid and semi-solid samples. It operates on the principle of thermogravimetry: a precisely weighed sample is subjected to controlled infrared radiation heating, inducing rapid and uniform evaporation of volatile water content. Mass loss is monitored continuously via an integrated high-stability analytical balance; when the mass change falls below a predefined threshold over time (indicating thermal equilibrium and cessation of evaporative loss), the instrument calculates moisture content as a weight percentage relative to the initial sample mass. Unlike loss-on-drying (LOD) ovens that rely on convection heating and require manual endpoint judgment, the SH10A integrates heating and weighing into a single enclosed chamber, minimizing environmental interference and reducing analysis time from hours to minutes.

Key Features

• Integrated infrared heating system with adjustable temperature control (80–160 °C), enabling method optimization for heat-sensitive or high-boiling-point matrices.
• Dual-function optical projection scale calibrated to display direct moisture readout from 0 to 20% w/w—eliminating manual calculation and reducing transcription errors.
• High-reproducibility analytical balance with 10 g capacity and 5 mg readability, conforming to OIML R76-1 Class III specifications for laboratory use.
• Fixed-time and auto-termination modes supported via mechanical timer (0–30 min) and real-time mass stability detection, respectively.
• Robust stainless-steel sample pan (Ø100 mm) and sealed optical viewing window ensure long-term dimensional stability and consistent thermal transfer.
• Compact benchtop footprint (280 × 375 × 560 mm) designed for space-constrained QC environments without compromising ergonomic access or ventilation clearance.

Sample Compatibility & Compliance

The SH10A is validated for use with granular, powdered, flaked, and low-viscosity paste samples—including agricultural commodities (grains, tea leaves), foodstuffs (dairy powders, spices), industrial raw materials (pharmaceutical excipients, mineral ores), and fuel pellets. It is not suitable for samples containing volatile organic compounds (VOCs), crystalline hydrates, or thermally labile components where decomposition may occur within the operational temperature range. While the instrument itself does not carry ISO/IEC 17025 accreditation, its measurement methodology aligns with ASTM D4442 (Standard Test Methods for Direct Moisture Content of Wood and Wood-Based Materials) and ISO 4463 (Cereals and cereal products — Determination of moisture content — Reference method). Users are responsible for establishing in-house validation protocols per GLP or GMP requirements, including calibration traceability to NIST-traceable mass standards and periodic verification of heating uniformity and temperature accuracy.

Software & Data Management

The SH10A is a standalone analog-digital hybrid instrument with no embedded microprocessor or data export capability. Moisture results are displayed optically via a calibrated glass scale and recorded manually. For laboratories requiring electronic data capture, integration with external LIMS or ELN systems is achieved through optional third-party digital camera-based image capture solutions or manual entry following documented SOPs. The absence of firmware or network connectivity ensures immunity to cybersecurity vulnerabilities and eliminates need for 21 CFR Part 11-compliant audit trails—making it appropriate for non-regulated or legacy-process environments where simplicity and regulatory minimalism are prioritized.

Applications

• Routine moisture verification in grain elevators and feed mills per USDA FGIS moisture tolerance limits.
• In-process moisture checks during spray-drying of milk powder or instant coffee to maintain solubility and shelf-life specifications.
• Raw material release testing in food manufacturing facilities against Codex Alimentarius moisture thresholds.
• Quality screening of biomass fuels prior to combustion to optimize calorific value and reduce stack emissions.
• Educational demonstrations of thermogravimetric principles in university chemistry and food science laboratories.

FAQ

Is the SH10A compliant with FDA 21 CFR Part 11?
No—the instrument lacks electronic record generation, user authentication, or audit trail functionality required under Part 11. It is intended for environments where paper-based records are acceptable.
Can it measure moisture in oils or liquids?
No—its design assumes solid or semi-solid sample geometry with sufficient surface area for infrared absorption. Liquid samples will splatter or migrate under heating and invalidate gravimetric measurement.
What calibration standards are recommended?
Use certified reference materials such as anhydrous sodium tartrate (15.66% w/w moisture) or potassium hydrogen phthalate (0.12% w/w) for performance verification; balance calibration requires Class M2 or better weights traceable to national metrology institutes.
Does it support multiple temperature ramp profiles?
No—it provides only fixed-point temperature selection within the 80–160 °C range. Programmable ramps require modern halogen or microwave moisture analyzers.
Is routine maintenance required beyond cleaning?
Yes—monthly inspection of infrared lamp output intensity, quarterly verification of optical scale alignment, and annual recalibration of the internal balance mechanism are recommended per manufacturer’s service bulletin SH10A-MAINT-REV3.