TA Instruments Discovery Series TGA1 Thermogravimetric Analyzer with 4 gas delivery

Instrument no. 954001.901

The TA Instruments Discovery TGA (Thermogravimetric Analyzer) measures the amount and rate of weight change in a material as a function of temperature or time. The technical specifications for the core first-generation Discovery TGA platform (along side its modern 5500 / 550 / 55 successor variants) define its baseline performance

Core Performance Specifications

Temperature Range Ambient to 1000°C (Standard) / 1200°C (IR/5500 Furnace)

Temperature Accuracy± 1.0 °C

Temperature Precision± 0.1 °C

Weighing Capacity1.0 gDynamic

Weighing Range1000 mg

Baseline Drift< 10 µg (without post-test data manipulation)

Heating Rate (Linear)0.01 to 100 °C/min (Standard) / up to 500 °C/min (IR/5500)

Heating Rate (Ballistic)> 1500 °C/min to 1600 °C/min

Furnace Cooling1000°C to 50°C in < 12 minutes

Balance and Furnace Innovations

• Tru-Mass™ Balance: Features a thermally isolated, ultra-low drift, high-sensitivity vertical balance system.
• IR Heating Furnace: Leverages halogen lamps inside a gold-reflective cavity to deliver rapid ballistic heating and exceptionally fast sample cooldowns.
• Evolved Gas Analysis (EGA): Engineered with a horizontal purge path over the sample to eliminate dead volume. This maximizes sensitivity when interfacing directly with Quadrupole Mass Spectrometers (MS), FTIR, or Gas Chromatography (GC) systems.

Automation & Gas Control

• Autosampler: Integrated 25-position carousel that works with all pan types, featuring optional pan-punch automation for air-sensitive samples.
• Gas-Delivery Module: Uses built-in manifolds to completely remove high-leak tubing paths. It provides precise software-controlled dynamic gas switching and blending capabilities