LimsPulse
Thermal analysis & ovens

Thermogravimetric Analyser (TGA)

Weighs a sample continuously while it is heated, and records mass loss against temperature. Used to measure water and solvent content, decomposition and residue.

  • Pharmaceutical
  • Polymers
  • Materials science
  • Minerals
  • Chemicals
Photo of a Thermogravimetric Analyser (TGA)
Photo: Luigi Chiesa, CC BY 3.0 (cropped), via Wikimedia Commons
CALIBRATION

TGA calibration procedures

Temperature calibration (Curie point)

Uses a magnet and ferromagnetic standards that lose their magnetism at known Curie temperatures to check the TGA temperature scale.

Open procedure

Mass calibration

Checks the TGA microbalance with certified milligram weights, and optionally its overall performance with calcium oxalate monohydrate.

Open procedure
QUALIFICATION

Instrument qualification (DQ · IQ · OQ · PQ)

  1. 01

    DQ — Design qualification

    Defines temperature range, balance sensitivity, gases, autosampler and software compliance needs.

  2. 02

    IQ — Installation qualification

    Confirms correct installation, gas and exhaust connections, software version and documentation.

  3. 03

    OQ — Operational qualification

    Checks temperature accuracy (Curie point standards), mass accuracy (certified weights) and baseline stability.

  4. 04

    PQ — Performance qualification

    Shows routine performance, for example with calcium oxalate monohydrate whose three mass-loss steps are known from its formula.

In LimsPulse · Calibration Management

Keep every TGA in control: usage logs, calibration and maintenance schedules, and automatic blocking of overdue instruments.

See how