25.03.2026 by Aileen Sammler
LFA 707 StratoFlash® Classic: New Laser Flash Analysis Instrument up to 1600°C
The LFA 707 StratoFlash® Classic is NETZSCH’s new off-the-shelf system for laser flash analysis (LFA), operating from room temperature to 1600°C.
High-Precision Thermal DiffusivityThermal diffusivity (a with the unit mm2/s) is a material-specific property for characterizing unsteady heat conduction. This value describes how quickly a material reacts to a change in temperature.Thermal Diffusivity Measurements up to 1600°C
The LFA 707 StratoFlash® Classic is NETZSCH’s new off-the-shelf system for laser flash analysis (LFA), operating from room temperature to 1600°C.
The compact tabletop instrument combines proven NETZSCH measurement accuracy, in-house developed laser technology and an automatic sample changer at a highly competitive price.
Developed as the successor to the well-established LFA 427, the system enables reliable measurements of Thermal DiffusivityThermal diffusivity (a with the unit mm2/s) is a material-specific property for characterizing unsteady heat conduction. This value describes how quickly a material reacts to a change in temperature.thermal diffusivity, Thermal ConductivityThermal conductivity (λ with the unit W/(m•K)) describes the transport of energy – in the form of heat – through a body of mass as the result of a temperature gradient (see fig. 1). According to the second law of thermodynamics, heat always flows in the direction of the lower temperature.thermal conductivity and Specific Heat Capacity (cp)Heat capacity is a material-specific physical quantity, determined by the amount of heat supplied to specimen, divided by the resulting temperature increase. The specific heat capacity is related to a unit mass of the specimen.specific heat capacity on a wide range of materials — from metals to ceramics and advanced composites.
The goal is clear: make high-temperature laser flash analysis more accessible without compromising data quality.
What is Laser Flash Analysis and Why is it Important?
Laser Flash Analysis (LFA) is one of the most widely used techniques for determining thermophysical material properties.
The method measures:
- Thermal DiffusivityThermal diffusivity (a with the unit mm2/s) is a material-specific property for characterizing unsteady heat conduction. This value describes how quickly a material reacts to a change in temperature.thermal diffusivity
- Specific Heat Capacity (cp)Heat capacity is a material-specific physical quantity, determined by the amount of heat supplied to specimen, divided by the resulting temperature increase. The specific heat capacity is related to a unit mass of the specimen.specific heat capacity
- Thermal ConductivityThermal conductivity (λ with the unit W/(m•K)) describes the transport of energy – in the form of heat – through a body of mass as the result of a temperature gradient (see fig. 1). According to the second law of thermodynamics, heat always flows in the direction of the lower temperature.thermal conductivity
These properties are essential for:
- electronics cooling
- high-temperature materials
- battery systems
- aerospace components
- industrial process design
- input data for simulations
The LFA technique is fast, accurate and non-destructive, making it a standard tool in research and industrial laboratories.
Smart Sample Organization for Maximum Lab Efficiency
The top cover of the LFA 707 StratoFlash® Classic serves as a convenient area for sample preparation and storage. It has been thoughtfully designed with four visually distinct sections, each corresponding to specific specimen locations within the furnace.
This innovative layout simplifies sample identification and pre-assembly, minimizes instrument downtime, and is especially beneficial in multi-user environments.
What Makes the New NETZSCH LFA 707 StratoFlash® Classic Unique?
Compact tabletop system with high-end laser
The LFA 707 StratoFlash® Classic is designed as a compact tabletop instrument.
Key design advantages:
- In-house developed laser system
- compact laboratory footprint
- robust system design
- easy to use
Despite its compact size, the instrument offers the full measurement capability expected from NETZSCH LFA systems.
Wide temperature range up to 1600°C
The system enables measurements across a broad temperature range:
- Room temperature to 1600°C
- heating rates between 0.01 and 50 K/min
This range makes the LFA 707 suitable for demanding high-temperature applications, including metals and alloys, ceramics and glass, refractory materials, aerospace materials, defense and nuclear materials. Download here the technical specifications:
Automatic Sample Changer for efficient workflows
The integrated Automatic Sample Changer (ASC) allows several samples to be analyzed within one measurement series. Depending on the sample size, up to 5 samples can be analyzed in a single heating cycle during a measurement series.
Benefits for laboratories:
- higher specimen throughput
- identical measurement conditions
- reduced operator effort
This is particularly valuable in quality control and materials development labs.
Pulse correction for high-conductivity materials
The LFA system measures materials across a wide property range:
- Thermal DiffusivityThermal diffusivity (a with the unit mm2/s) is a material-specific property for characterizing unsteady heat conduction. This value describes how quickly a material reacts to a change in temperature.thermal diffusivity: 0.01 – 2000 mm²/s
- Thermal ConductivityThermal conductivity (λ with the unit W/(m•K)) describes the transport of energy – in the form of heat – through a body of mass as the result of a temperature gradient (see fig. 1). According to the second law of thermodynamics, heat always flows in the direction of the lower temperature.thermal conductivity: 0.1 – 4000 W/(m·K)
Thin specimens with high Thermal ConductivityThermal conductivity (λ with the unit W/(m•K)) describes the transport of energy – in the form of heat – through a body of mass as the result of a temperature gradient (see fig. 1). According to the second law of thermodynamics, heat always flows in the direction of the lower temperature.thermal conductivity (e.g., copper or silver) may reach the half-temperature rise within microseconds. To obtain reliable results, the NETZSCH LFA 707 uses:
- adjustable laser pulse widths from 50 µs to 1500 µs
- high-speed data acquisition rate of 2 MHz
- pulse correction algorithms in the software
Measurements of copper samples with thicknesses between 0.32 mm and 4 mm achieved results within ±2.5% of literature values, see figure below.
This capability is essential especially for applications such as:
- power electronics cooling plates
- heat spreaders
- battery systems
How Does the New Proteus® Software Improve User Experience?
The LFA 707 runs on Proteus® software. The new software generation offers:
- a modern user interface
- improved workflow management
- a powerful SQL database
- advanced calculation models
- measurement comparison tools
- automated evaluation functions
- the possibility to export data to common formats
Safety Built into the System
High-temperature measurements require strict safety control.
The LFA 707 integrates multiple safety mechanisms:
- furnace safety systems
- laser safety monitoring
- controlled gas flow
Measurements are typically performed under protective inert gas or vacuum conditions, allowing for safe operation and preventing sample OxidationOxidation can describe different processes in the context of thermal analysis.oxidation.
Why Choose the new NETZSCH LFA 707?
The LFA 707 StratoFlash® Classic combines:
- proven NETZSCH technology
- high measurement accuracy
- a compact tabletop design
- an Automatic Sample Changer
- a modern software environment
- a very good price-performance ratio
This combination makes the instrument an attractive solution for laboratories entering laser flash analysis or looking for replacement.
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