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Português What Is Loss on Ignition (LOI)?
Loss on Ignition (LOI) is a widely used analytical method for determining the amount of volatile components released from a material when it is heated to high temperatures. The weight loss observed during heating reflects the presence of moisture, organics, carbonates, and other compounds. LOI is a valuable parameter across many industries:
- Soils and sediments – to assess organic matter and carbonate content for environmental and agricultural studies.
- Ores and minerals – to evaluate composition, beneficiation efficiency, and economic value.
- Cement and clinker – to ensure quality control and stable kiln operation.
- Waste and by-products – to monitor treatment processes, combustion residues, and environmental compliance.
Because LOI provides critical information on material composition, it plays an essential role in process optimization, product consistency, and regulatory reporting.
A Smarter Way to Measure LOI
Traditional LOI testing often relies on single-sample muffle furnaces, which require manual handling and lengthy heating cycles. This approach can be time-consuming, prone to variability, and limited in throughput.
The multi-sample, multi-stage thermogravimetric analyzer (TGA) from Navas Instruments replaces these conventional methods with a fully automated solution. Designed to process multiple crucibles simultaneously, the instrument records precise mass changes throughout programmable temperature stages. In addition to LOI, the same analysis can determine:
- Moisture
- Volatile matter
- Ash content
This integration allows laboratories to obtain a complete thermal profile of samples in a single run, with consistent accuracy and full data traceability. Results can be exported directly to Excel or LIMS, improving efficiency and documentation.
Benefits for Modern Laboratories
By eliminating repetitive manual steps, the Navas Instruments TGA improves reproducibility, increases throughput, and reduces operator workload. The system’s multi-sample, multi-stage design enables laboratories to run more analyses in less time, while maintaining precise and reliable results across soil, ores, cement, waste, and other sample types.
