DZ-STA200 Simultaneous Thermal Analyzer (TG-DSC)

Overview

The DZ-STA200 Simultaneous Thermal Analyzer is an engineered solution for concurrent thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC) under controlled atmospheric conditions. Based on the principle of dual-sensor microbalance and heat-flux compensation, it simultaneously records mass change (Δm) and differential heat flow (dH/dt) as a function of temperature or time. This synchronized measurement architecture enables precise correlation between thermal events—such as decomposition, oxidation, phase transitions, or crystallization—and their associated mass-loss kinetics. Designed for laboratory environments requiring reproducible, traceable thermal characterization, the DZ-STA200 supports compliance-driven workflows in R&D, quality control, and regulatory submission contexts—including ISO 11358, ASTM E1131, ASTM E1269, and USP for thermal stability assessment.

Key Features

• Integrated dual-channel measurement system delivering synchronized TGA and DSC signals with time-aligned data acquisition
• High-stability horizontal furnace with uniform heating zone, enabling accurate thermal ramping from ambient to 1250 °C
• Ultra-sensitive microbalance with 0.01 mg resolution and extended dynamic range (0.01 mg–30 g), calibrated across multiple mass points
• Programmable temperature control supporting multi-step ramps, isothermal holds (duration user-defined), and cooling profiles
• Dual-gas manifold with integrated mass flow controllers for precise switching and regulation of inert (N₂, Ar), oxidizing (air, O₂), or reducing (H₂/N₂, CO) atmospheres—configurable for static or dynamic purge modes
• 7-inch capacitive touchscreen interface with intuitive icon-based navigation, real-time curve overlay, and on-device annotation
• Robust ceramic crucible platform compatible with standard alumina, platinum, and graphite sample pans for broad material compatibility

Sample Compatibility & Compliance

The DZ-STA200 accommodates solid powders, granules, thin films, fibers, and small-volume liquids (in sealed crucibles). Its modular design permits direct integration into GLP/GMP-compliant laboratories: software enforces user-level access control, electronic signatures, and full audit trail per FDA 21 CFR Part 11 requirements. Calibration routines include NIST-traceable indium, zinc, and alumina standards for temperature and enthalpy verification at multiple points (e.g., 156.6 °C, 419.5 °C, 1096 °C). All thermal data files retain embedded metadata—including instrument ID, operator, date/time stamp, gas flow rates, and calibration history—ensuring full traceability for regulatory audits.

Software & Data Management

Bundled with DAZHAN Thermal Analysis Suite v3.x, the system provides comprehensive post-acquisition processing: baseline correction, peak deconvolution, derivative (DTG) generation, kinetic modeling (e.g., Kissinger, Ozawa-Flynn-Wall), and comparative overlay of up to 16 curves. Export options include CSV, Excel (.xlsx), and publication-ready PDF reports with customizable templates. Data integrity is maintained via automatic checksum validation, version-controlled file saving, and optional network backup to secure NAS or LIMS endpoints. The software supports IQ/OQ documentation packages and includes built-in validation protocols aligned with ISO/IEC 17025 clause 5.9.

Applications

• Materials Science: Quantification of filler content, decomposition onset in composites, thermal stability of ceramics and refractories
• Polymers & Elastomers: Determination of degradation kinetics, residual solvent content, crosslink density, and oxidative induction time (OIT)
• Pharmaceuticals: Polymorph screening, excipient compatibility studies, desolvation behavior, and amorphous content estimation
• Energy Materials: Cathode/anode thermal runaway profiling, binder decomposition in Li-ion batteries, catalyst thermal sintering analysis
• Metallurgy & Alloys: Solidus/liquidus mapping, phase transformation enthalpies, and oxidation rate modeling under simulated service conditions
• Food & Agriculture: Moisture loss profiling, starch gelatinization, lipid oxidation onset, and ash content quantification

FAQ

What types of atmospheres can be used during analysis?
The DZ-STA200 supports inert (N₂, Ar), oxidizing (air, O₂), and reducing (5% H₂/95% N₂, CO) gases, delivered in either static or dynamic flow mode (0–200 mL/min per channel).

Is the instrument compliant with pharmaceutical regulatory standards?
Yes—the software architecture supports 21 CFR Part 11 compliance, including role-based access, electronic signatures, and immutable audit trails required for FDA submissions.

Can the system perform kinetic analysis on decomposition steps?
Yes. The included software implements model-free (e.g., Friedman, Ozawa-Flynn-Wall) and model-fitting methods (e.g., nth-order, Avrami) using multi-heating-rate datasets.

What is the recommended maintenance schedule for the microbalance and furnace?
Daily zero calibration is advised; full balance recalibration every 3 months; furnace emissivity verification annually using certified reference materials.

Does the system support custom crucible configurations?
Standard configurations include alumina, platinum, and graphite crucibles; custom geometries (e.g., high-volume, suspended, or pressure-rated) are available upon request with engineering review.