Nanjing Dazhan DZ-STA200 Simultaneous Thermal Analyzer (TG-DSC/DTA)
| Brand | Nanjing Dazhan |
|---|---|
| Origin | Jiangsu, China |
| Manufacturer Type | Direct Manufacturer |
| Region | Domestic (China) |
| Model | DZ-STA200 |
| Price | ¥85,000 |
| Temperature Range | Ambient to 1200 °C |
| Heating Rate | 0.1–100 °C/min |
| Max Sample Mass | 2 g (expandable to 5 g) |
| Atmosphere Control | Integrated dual-channel mass flow controller with adjustable flow rate and gas switching (inert, oxidizing, reducing |
Overview
The Nanjing Dazhan DZ-STA200 Simultaneous Thermal Analyzer is an engineered platform for concurrent thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC), or alternatively differential thermal analysis (DTA), performed on a single sample under identical thermal conditions. Based on the principle of simultaneous mass loss measurement (via high-resolution microbalance) and heat flow detection (via thermopile-based sensor), the instrument delivers synchronized, time-aligned TG, DTG, and DSC/DTA data—enabling rigorous correlation between thermal stability, decomposition kinetics, phase transitions, enthalpy changes, and compositional evolution. Designed for laboratories requiring reproducible, traceable thermal characterization under controlled atmospheres, the DZ-STA200 supports method development aligned with ASTM E1131, ISO 11358, and USP guidelines for thermal analysis validation.
Key Features
- High-stability furnace architecture featuring dual-row wound noble alloy heating elements, minimizing electromagnetic interference and ensuring uniform temperature distribution up to 1200 °C.
- Ceramic rod–coupled sample holder assembly, delivering exceptional resistance to oxidation, corrosion, and thermal creep at elevated temperatures.
- Physically decoupled power supply and forced-air cooling module—mounted separately from the main chassis—to eliminate mechanical vibration and thermal crosstalk to the microbalance system.
- Top-opening furnace design with integrated thermal shielding, facilitating rapid sample loading/unloading while maintaining structural integrity of the balance chamber.
- Modular furnace interface allowing optional replacement with alternative temperature-range configurations (e.g., extended low-temperature or ultra-high-temperature variants) upon request.
- 24-bit color 7-inch capacitive touchscreen interface with real-time curve overlay, multi-point temperature and enthalpy calibration support, and on-device data annotation.
Sample Compatibility & Compliance
The DZ-STA200 accommodates standard crucibles including alumina, platinum, and aluminum pans (with optional hermetic lids), supporting solid powders, granules, thin films, and small monolithic specimens up to 2 g (extendable to 5 g with recalibration). Dual-gas manifold integration enables seamless switching between inert (N₂, Ar), oxidizing (air, O₂), and reducing (H₂/N₂ mixtures) atmospheres under dynamic or static flow conditions (0–200 mL/min per channel, digitally regulated). The system complies with GLP documentation requirements through audit-trail–enabled software logging, and supports IQ/OQ documentation packages for GMP-regulated environments per FDA 21 CFR Part 11 when operated with validated firmware versions.
Software & Data Management
The proprietary intelligent thermal analysis software provides full control over temperature programming (ramp, hold, step, multi-segment), real-time data acquisition (up to 50 Hz sampling), and post-run processing—including baseline correction, peak deconvolution, derivative (DTG) generation, and kinetic modeling (e.g., Ozawa-Flynn-Wall, Kissinger). Export formats include CSV, Excel (.xlsx), and PDF report templates compliant with internal QA standards. All raw and processed datasets retain full metadata (operator ID, timestamp, instrument serial number, calibration history), and support automated backup via USB storage or network-mapped drives. Software updates are delivered via secure firmware signing protocol to ensure version traceability.
Applications
- Quantification of bound vs. free water and crystalline hydrate stoichiometry in pharmaceutical actives and excipients.
- Decomposition onset temperature and activation energy determination for polymer composites and battery cathode materials.
- Phase transition mapping (glass transition, cold crystallization, melting) in semi-crystalline thermoplastics and biopolymers.
- Oxidative induction time (OIT) assessment of stabilizer efficacy in polyolefins per ASTM D3895.
- Thermal stability profiling of catalysts and metal-organic frameworks (MOFs) under programmed gas switching protocols.
- Residue yield and ash content determination in food additives, ceramics, and coal derivatives per ISO 1171 and ASTM D3174.
FAQ
What temperature calibration standards are supported?
The system supports multi-point calibration using high-purity indium, tin, zinc, and aluminum standards for both temperature and enthalpy verification across the full operating range.
Is the microbalance compliant with ASTM E2550 for TGA accuracy?
Yes—the 0.1 µg resolution and ≤0.01 mg repeatability meet the sensitivity and precision criteria specified in ASTM E2550 for quantitative residue and decomposition analysis.
Can the software generate 21 CFR Part 11–compliant electronic records?
When deployed with password-protected user roles, electronic signatures, and immutable audit logs enabled, the software satisfies core technical controls required for regulated submissions.
What is the typical cooling time from 1000 °C to 100 °C?
Under forced-air cooling mode, the furnace achieves ≤15 minutes, verified per ISO 11357-1 Annex A.
Are third-party crucibles compatible with the DZ-STA200?
Yes—standard ISO-compliant crucibles (φ6.7 mm × 2.5 mm depth) from Netzsch, TA Instruments, and Setaram are mechanically and thermally interoperable.
