Material Analysis · Chromatography & Diagnostics

Thermal Analysis Evolved-Gas Analysis (TG-FTIR/MS/GC-MS) (EGA)

Characterise mass change and thermal-event temperature, evolved-gas identity and relative intensity, and decomposition, desorption, oxidation, and residue pathways using a scope agreed around your sample and decision.

  • Mass change and thermal-event temperature
  • Evolved-gas identity and relative intensity
  • Decomposition, desorption, oxidation, and…
  • TG-FTIR
Configure & Book Check Sample Requirements
Representative Thermal Analysis Evolved-Gas Analysis (TG-FTIR/MS/GC-MS) equipment selected for the TESTDOG service catalogue
Price
from£450
per sample, excl. VAT
Turnaround
10 working days
Preparation and scope dependent
Available platforms
PerkinElmer TGA 8000 with FTIR/GC-MS interfaceMettler Toledo TGA 2 + Thermo Fisher Nicolet iS50STA 449 F3
Typical outputs
TG/DTG and optional DSC curvesTime/temperature-linked FTIR or MS tracesIdentified evolved species and integrated interpretationProcessed spectra

Why this service

What EGA can help you understand

Thermal Analysis Evolved-Gas Analysis (TG-FTIR/MS/GC-MS) is selected when the project needs defensible information on mass change and thermal-event temperature, evolved-gas identity and relative…

01

Mass change and thermal-event temperature

TG-FTIR

02

Evolved-gas identity and relative intensity

TG-MS

03

Decomposition, desorption, oxidation, and residue pathways

TG-GC-MS

Choose the scope

Start from the question, not the tool

The method, preparation route and reporting depth depend on what you need to decide.

TG-FTIR

mass change and thermal-event temperature

Best used when
mass change and thermal-event temperature
Typical result
TG/DTG and optional DSC curves
Preparation note
Exact mass and any drying or dispersion step are confirmed after technical review.

Common outputs

A result package matched to the decision you need to make

Fields, conditions, processing and file formats are confirmed before work begins.

StandardTG/DTG and optional DSC curves

TG/DTG and optional DSC curves reported with the agreed units, sample reference and measurement conditions.

StandardTime/temperature-linked FTIR or MS traces

Time/temperature-linked FTIR or MS traces supplied in a labelled format suitable for direct sample or condition comparison.

OptionalIdentified evolved species and integrated interpretation

Identified evolved species and integrated interpretation provided with the processing basis and quality checks agreed during technical review.

OptionalProcessed spectra

Processed spectra included when selected in the confirmed reporting scope.

Example results

What EGA results can look like

EGA result: The plot shows eGA chart (FTIR coupled evolved gases analysis) Absorption spectrum in the infrared region for pellets
Infrared spectrum

The plot shows eGA chart (FTIR coupled evolved gases analysis) Absorption spectrum in the infrared region for pellets.

Bárbara Zanini et al. · source · CC BY

Sample requirements

What to provide before work begins

Provide representative, clearly labelled samples and identify the decision, feature or comparison that matters.

Suitable sampleSubmission requirementPlanning note
Powder / particlesProvide a dry, homogeneous and clearly labelled sample in a sealed container.Exact mass and any drying or dispersion step are confirmed after technical review.
Film / coatingProvide the coated substrate or a flat film with the test surface and coating side clearly marked.State the substrate, nominal thickness and whether sectioning or mounting is permitted.
Gas / headspaceProvide the gas composition, concentration range, cylinder or sampling format and required pressure.Gas compatibility, fittings, flow and safety controls are confirmed before acceptance.
Device / assemblyProvide a complete labelled device or assembly with drawings, interfaces and operating limits.Confirm power, connections, operating state, access restrictions and permitted disassembly.

Objective: state the decision, comparison or acceptance criterion the work must support.

Handling and access: declare hazards, instability, confidentiality, file constraints or special logistics before dispatch or transfer.

Questions and answers

Common planning decisions

Short answers to issues that can change preparation, scope, timing or interpretation.

What should I send for Thermal Analysis Evolved-Gas Analysis (TG-FTIR/MS/GC-MS)?

Provide powder / particles, film / coating, gas / headspace, device / assembly as applicable. Exact quantity, dimensions and preparation are confirmed during technical review.

Which analysis option should I choose?

Choose the mode around the decision you need to make. For mass change and thermal-event temperature, start with TG-FTIR; add TG-MS when comparison or quantification is required.

How long will the test take?

Typical turnaround is 10 working days after sample acceptance and method confirmation.

What can limit the result?

Transfer lines cause delay, dilution, condensation, and selective loss. Gas signals are often semi-quantitative without compound-specific calibration.

Configure the service

Send the information needed to scope EGA correctly

  • Sample form, material, dimensions and quantity
  • Feature or decision the result must address
  • Required comparison, acceptance criterion or reference
  • Preferred output and reporting depth
EGA analysisfrom£450

Typical turnaround: 10 working days

Configure & Book