Sample Handling Of PerkinElmer TGA 4000 Thermogravimetric Analyzer

by Redthermo - 2023-03-21

Sample Pans For PerkinElmer TGA 4000 Thermogravimetric Analyzer

Introduction of TGA 4000 Thermogravimetric Analyzer

The TGA 4000 Thermogravimetric Analyzer is an ideal choice for quality control laboratories due to its reliability, robustness, affordability, and user-friendly design. This analyzer offers a reliable and cost-effective solution to laboratory testing, while still providing excellent results. It is designed to be easy to use and maintain, making it suitable for any laboratory environment. The TGA 4000 offers a variety of features that make it a great choice for quality control laboratories, including its high accuracy, low maintenance requirements, rapid data acquisition, and wide temperature range. This analyzer is an essential tool for ensuring the quality of products and services.

The Pyris software controls the TGA 4000, which is installed on the computer connected to the analyzer. This program measures the weight of a material relative to its temperature or time. It accurately records changes in weight, which can uncover details of the sample's processes, such as dehydration, degradation, and oxidation. Furthermore, the TGA 4000 can perform evaluations in non-air atmospheres, allowing one to analyze a sample's behavior. It offers a range of services, including component analysis, stabilizer assessment, loss on drying, proximate analysis, lubricating oil analysis, and oxidation studies. These are all valuable to many industries, like plastics and polymers, automotive, semiconductors and electronics, adhesives, paints and coatings, fuels, ceramics, clays, and soil, food, pharmaceuticals, and medical devices and equipment.

Sample Handling of TGA 4000

The TGA 4000 is a device used to measure the changes in weight of a sample as a function of temperature or time. This device can be used to analyze a variety of materials, ranging from polymers to ceramics. In order to obtain accurate data, it is important to select the appropriate techniques and materials. The sample material should be dried and thoroughly mixed before being placed in the crucible of the TGA 4000. The sample should be heated at a rate that is appropriate for the material, and the weight should be monitored as the sample is heated. The data obtained from the TGA 4000 can then be used to determine the properties of the material and to analyze the thermal stability of the sample.

Sample Preparation

The thermogravimetric analyzer is designed to analyze solid samples that come in powder, crystal, or granular form. The accuracy of the results will remain the same no matter what the sample shape is, but the appearance of the run may be different depending on how the sample is configured. The best results are achieved when the sample is in powder or fine granules form. If the sample is in a solid form, it can be cut into small pieces using a razor or knife.

Sample Pans

The self-centering, thin-walled, ceramic sample pan provided with the instrument is the recommended sample pan. This sample pan centers itself in the pan and the pan centers itself on the sample holder. For convenience, three sample pans are included in the Spares kit. Other sample pans, such as platinum sample pans or graphite sample pans, can also be used, as long as they do not react or melt within the desired temperature range and the sample does not form alloys with the material of the sample pan.

Below are the sample pans for TGA 4000 provided by REDTHERMO.

Part No.	Description
PE-N5200045 PE-N5200040	250μl Ceramic Sample Pans for PerkinElmer TGA6/As6 STA 8000, TGA 4000, STA 6000 Also can view sample pan lids
	250μl Platinum crucible for PerkinElmer TGA6/As6 STA 8000, TGA 4000, STA 6000
	250μl STA 8000 graphite crucible for PerkinElmer TGA6/As6 STA 8000, TGA 4000, STA 6000

Sample Atmosphere

The TGA 4000 is designed to operate in different gas atmospheres, allowing for rapid transitions between them. It features one purge gas inlet for the system purge gas and two sample purge gas inlets at the back of the analyzer. The system purge gas should be a dry, inert gas that circulates through the microbalance chamber, maintaining a constant environment and protecting the balance from the gases generated by the samples. The flow rate of the system purge gas is 40 ml/min, and it is recommended that it remain active at all times to reduce the equilibration time of the analyzer.

You can manipulate the atmosphere around the sample by introducing or eliminating reactive gases with a reactive purge gas into the sample furnace. It is recommended to use air, nitrogen, argon, oxygen, and helium as purge gases. Once transitioning from one purge gas to another, it is essential to double check the temperature calibration. A flow rate of 20-40 ml/min is advised.

The reaction gas is delivered directly to the sample area of the furnace, located beneath the sample itself. This reduces the dead volume, making the gas exchange time shorter. The rate of exchange is determined by the flow rate of the gas. The gas atmosphere must be of the purest quality, with no less than 99.9% purity. Oxygen should be totally absent, as it can cause unanticipated reactions. Furthermore, the gas must be dry for optimum performance.

The sample's degradation byproducts are emitted from the instrument through a tiny opening in the furnace lid. It is essential to employ proper suction, such as a fume hood, as these byproducts may be hazardous. As the analyzer cools, condensation of less volatile products may accumulate on the lower side of the cover and the upper inner side of the cooling jacket. This accumulation can be effortlessly removed with an appropriate solvent. Additionally, condensation may also collect on the top inner side of the cooling jacket, so the porous ceramic furnace cover should be replaced if necessary to absorb the less volatile byproducts.

Loading the Sample into the TGA 4000

Follow this process to add or remove samples:

1. Take the stainless steel cover off the top of the analyzer with a pair of tweezers and put it on the stainless steel ring around the furnace entrance.

2. Put the sample into the sample pan.

3. Using tweezers, carefully center the sample pan with sample on the sample holder.

4. Put the lid back on.