STAvesta

STAvesta Overview

Precision made simple – Advanced STA performance with confidence

With six types of easily interchangeable electric furnaces, STAvesta allows you to switch measurement targets or analysis methods with minimal effort. Furnace exchange is quick and simple, and there's no need to remove other attachments; a user-friendly design detail that saves time and effort.

STAvesta can be expanded to integrate with gas analysis systems such as GC-MS and FTIR, enabling hyphenated measurements that provide deeper insight into complex thermal reactions.

Highly accurate triple-coil balance for reliable baseline correction

The twin-holder differential TG-DSC system employs a horizontal differential triple-coil balance. This configuration effectively cancels out sources of drift, ensuring consistently accurate weight-change measurements with ease.

Sealed, optimized balance chamber for improved atmosphere control

STAvesta features enhanced system sealing and optimized gas flow design. Gas introduced from the middle gas port is divided between the furnace and the balance chamber, preventing residual oxygen accumulating in the balance area from reaching the sample.

This enables rapid reduction of oxygen concentration near the sample with minimal gas consumption.

Stable, worry-free measurement with enhanced reproducibility

The horizontal differential balance offers TG baseline reproducibility better than 10 μg. Combined with our innovative FlatBlank function, which automatically adjusts the blank signal, STAvesta allows for more stable and reproducible thermal measurements even under low-gas conditions.

→see more about the FlatBlank function

Even temperature distribution with isothermal unit

By integrating an isothermal unit within the furnace’s protective tube, the temperature around the sample is uniformly distributed. This minimizes the effects of radiation and convection, resulting in a significantly more stable DSC baseline and allowing for highly accurate and reliable quantitative analysis.
(Compatible with: standard furnace (S), high temperature furnace (H), and indirect heated furnace (B))

Advanced temperature control system for better hold accuracy

The STAvesta is equipped with both Rapid Control and Advanced Control as standard, ensuring precise temperature following during isothermal or slow heating rate measurements.

→see more about Rapid Control + Advanced Control

Flexible measurement systems for varied applications

Designed to meet diverse analysis needs, STAvesta supports dynamic TG (compatible with CRC and SIA methods) for improved resolution and separation. The system is expandable to STA/GC-MS for identifying evolved gases, and available with the ASC autosampler for high-throughput automated sample exchange.

Versatile furnace options for a range of conditions

All seven types of Rigaku furnaces—Standard, High temperature, Sample Observation, Indirect Heated, HUM (humid atmosphere), and Refrigerated Cooling (down to -40 °C)—are easily interchangeable by the user. This adaptability allows a single STAvesta unit to support a wide range of analyses, eliminating the need for multiple dedicated systems.

Built-in self-diagnostic system – vestaeye

Before starting a measurement, the system runs a self-diagnosis to check for abnormalities. Full diagnostics are performed on startup, and quick checks during standby or measurement ensure safe and reliable daily operation.

At-a-glance instrument status display

A uniquely designed LCD panel located on the front right corner displays essential information such as current temperature and TG/DSC signals, offering a clear view of system status. In case of an error, an error code is shown to help quickly identify the issue.

Optional ASC (Auto Sample Changer) for greater throughput

Upgradeable with ASC for automated measurements

The optional ASC can be added later and holds up to 52 samples. It enables uninterrupted, high-throughput measurements—up to 1,000 continuous runs—by automatically replacing samples. The transport speed has more than doubled compared to previous models, improving automation and efficiency. It also supports reference pan replacement and auto-calibration functions to further minimize downtime.

A gas flow system around the sample tray reduces ambient exposure, supporting accurate measurements of moisture-sensitive powder samples.

No need for special pans

Standard sample pans can be used—no dedicated ASC pans required.

Quick manual override when needed

A dedicated window for single-sample analysis allows quick, flexible measurements even in the middle of an automated run. Emergency samples can be prioritized using interrupt mode.

Automated reference pan exchange

Up to three types of reference pans can be loaded. The ASC automatically selects a suitable reference pan for each sample pan type (e.g., aluminum, alumina, platinum), enabling accurate measurement across a variety of sample materials.