TG 309 Libra^® Classic

 TGA features:

• Mass changes − Compositional analysis − Identification − Decomposition reactionA decomposition reaction is a thermally induced reaction of a chemical compound forming solid and/or gaseous products. Decomposition − OxidationOxidation can describe different processes in the context of thermal analysis.Oxidation − Thermal stability − Reduction behavior − Thermal Corrosion StudiesThermal corrosion or high-temperature corrosion is a chemical interaction of a material (typically a metal) with the surrounding gas atmosphere as a result of heating.Corrosion studies − Determination of:
  • Filler content
  • Plasticizer content
  • Residual solvents
  • Moisture content
  • Added Carbon BlackTemperature and atmosphere (purge gas) affect the mass change results. By changing the atmosphere from, e.g., nitrogen to air during the TGA measurement, separation and quantification of additives, e.g., carbon black, and the bulk polymer can become possible.carbon black
  • Ash content
  • Purity
• Influence of aging - Curie temperatures - Reaction kinetics - State of hydration - Residual solvents

Automatic Sample Changer (ASC)

The ASC of the TG 309 Libra^® Classic can be equipped with an optional automatic sample changer (ASC) for up to 20 samples and references. The samples are placed in a removable ASC insert which allows for preparation away from the instrument.

Interchangeable, Automatically Recognized Sample Holders 

There are several sample carriers available, such as high-sensitivity c-DTA sensors for better monitoring of endo- and ExothermicA sample transition or a reaction is exothermic if heat is generated.exothermic effects, corrosion-resistant sensors, and specialized sensors for large sample masses. The sample carrier is instantly recognized by the device and can be changed out in less than a minute.

Magnetic Shock Absorbers

An optional magnetic levitation device can be used to elevate the instrument off the work bench. This eliminates the effect of external factors such as VibrationA mechanic process of oscillation is called vibration. Vibration is a mechanical phenomenon whereby oscillations occur about an equilibrium point. In many cases, vibration is undesirable, wasting energy and creating unwanted sound. For example, the vibrational motions of engines, electric motors, or any mechanical device in operation are typically unwanted. Such vibrations could be caused by imbalances in the rotating parts, uneven friction, or the meshing of gear teeth. Careful designs usually minimize unwanted vibrations.vibration and contact, thus decreasing the number of measurements needed to produce reliable results.

Crucibles (Pans) for General Applications – TG 309 Libra^® Series

The TG 309 Libra^® series offers crucibles for regular and large sample masses, guaranteeing broad applications in the temperature range from room temperature to 1100°C.

There are a number of different crucibles (pans) of aluminum oxide, platinum, aluminum, graphite and fused silica available in different sizes up to 350 µl.

No Baseline Run Required – Get to Your Results Faster

In typical measurements, in order to ensure correct mass change values, a baseline run is carried out under identical test conditions for variables such as heating rate, gas type, gas flow rate, crucible type and geometry, etc., and subtracted from the sample measurement. The baseline takes instrument and buoyancy influences into consideration. In contrast, the TG 309 Libra^®® generally no longer requires a separate baseline correction when using the integrated BeFlat^®® baseline run for typical temperature profiles. This greatly simplifies routine test work, especially for quality control in industry.

AutoCalibration: Allows for Full Concentration on the Measurement Tasks

Calibration procedures should be straightforward and efficient, ideally conducted in real-time. AutoCalibration offers automatic functions to generate calibration curves. It handles the current temperature calibrations under consideration of the selected measurement conditions and monitors their validity periods through a watchdog function.

SmartMode for Routine Tasks – No More, No Less

SmartMode is an intuitive interface for fast measurement setup, designed specifically for the routine measurements often required in quality control. It allows you to quickly and easily prepare and start measurements for tasks using clearly defined measurement procedures. Wizards (quick start routines), userdefined measurement methods and predefined measurement methods are helpful assistants

ExpertMode – the Sky Is the Limit

For those who want to dive deeper into the software for advanced option setting or method definition, switching from SmartMode to ExpertMode is the answer. Here, the user has access to with its proven functionality of the Proteus^® software, including dozens of features and all of the adjustment settings.

When dealing with measurement and evaluation data from different materials and obtained through different measurement setups, the ability to filter based on specific criteria is incredibly beneficial. Proteus^® Search Engine provides fast and sophisticated filtering of your measurement data in seconds, serving as a powerful data management tool. Following the selection process, it automatically provides previews of measurements or analysis states. It also simplifies the process of opening folders in the file system by allowing this with a single click. Users have the flexibility to create personalized searches, such as “MyPolymers“, and easily switch between existing searches as needed.

Each operator can easily create their own report templates – including logos, tables, description fields and plots. Several report examples are already included as templates in the Proteus^® software. Results derived from Identify searches can also be included in reports.

If your experimental curve exhibits complexity, featuring overlapping mass-loss steps, know that our software is designed to assist in the separation of these peaks. It facilitates the presentation of experimental data as a sum of individual peaks and enables analysis of each peak separately.

Kinetics Neo creates kinetic models of Decomposition reactionA decomposition reaction is a thermally induced reaction of a chemical compound forming solid and/or gaseous products. decomposition and evaporation processes based on a series of measurements under different temperature conditions. With the powerful NETZSCH Kinetics Neo software, even multi-step processes can be precisely modelled. Kinetic parameters such as activation energy, pre-exponential factor and order of reaction can be determined. Kinetics Neo can be used to predict the behavior of chemical systems under user-defined conditions for process optimization.

Revealing Caloric Effects by Means of c-DTA^® 

The sample thermocouple is capable of detecting temperature changes within the sample. This makes it possible to also determine EndothermicA sample transition or a reaction is endothermic if heat is needed for the conversion.endothermic (e.g., melting) and ExothermicA sample transition or a reaction is exothermic if heat is generated.exothermic effects during thermogravimetric experiments and to characterize sample properties in a more comprehensive way. In addition, this opens up a precise option for temperature calibration with DSC standard materials. The c-DTA^® signal is calculated by comparing the measured sample temperature with the preset temperature-time program of the test run. The result is a DTA-like curve, as shown in red.

The two endothermal c-DTA^® peaks (198°C and 535°C) in the TGA measurement on a kaolinite sample are directly related to the occurring mass-loss steps and are caused by dehydration and dehydroxylation: loss of adsorbed water from the surface (0.3%) and loss of water from inter layers (10.6%). The ExothermicA sample transition or a reaction is exothermic if heat is generated.exothermal c-DTA^® peak at 999°C represents the formation of mullite.
 

✅ = Included
?= Optional
⛔️= Not available
* included when MFC is selected 
** requires Kinetics Neo 
More features on request.