The Ultra Inert liners with wool provide superior inertness for accurate analysis of semivolatile analytes by GC/FID, homogeneous sample mixing and evaporation, and maximum column and detector protection.
The document addresses the historical limitations of glass wool inlet liners, such as active sites causing analyte degradation or adsorption. It introduces Agilent's Ultra Inert deactivation process which effectively treats the large surface area of the glass wool to prevent these issues.
An experimental evaluation was conducted using an EPA 8270 customized standard mix containing difficult compounds like nitrophenols and amines. The study assessed calibration curve linearity, liner-to-liner reproducibility, thermal stability at 330 °C, and injection repeatability on an Agilent GC/FID system equipped with an Ultra Inert deactivated single taper splitless wool liner.
The evaluation used a calibration range of 2 to 80 ng on column.
The 2 ng on column quantitation limit requires a signal-to-noise ratio greater than 20.
The relative standard deviation for each target analyte should be less than 20%.