Automated Chromatography
An integrated analytical system couples liquid chromatography with gas chromatography and flame ionization detection. This configuration enables the automatic separation and analysis of complex mixtures of chemical contaminants. In the laboratory testing of paperboard, online lc-gc-fid is used to extract and measure low-molecular-weight hydrocarbons that can migrate into dry food products.
Mineral hydrocarbon Analysis
In paper and board analysis, online lc-gc-fid is the benchmark method for quantifying mineral oil saturated hydrocarbons and aromatic hydrocarbons. These substances often come from recycled newsprint inks or manufacturing lubricants. The liquid chromatography stage separates these two chemical groups, while the gas chromatography and detection stage quantifies the concentration of each fraction in the paperboard.
Process Monitoring
Automated transfer of fractions between the chromatography systems prevents the risk of sample contamination from external sources. This high-precision system yields reproducible results that are used to verify compliance with national regulations for recycled packaging. Because it eliminates manual handling steps, laboratories can process samples faster, giving paper mills rapid feedback on the clean status of their recycled fibre batches.
This rapid turnaround is essential for quality control departments that must release batches of packaging board quickly without risking downstream compliance failures at the converting plant or during product filling.
