Deactivation of the linerIt is suggested to use a deactivated/inert liner (or equivalent). Alternatively the liner must be deactivated as indicated below prior to analysis for the following reasons: to avoid any secondary reactions due to a possible interactions with the surface of the liner to improve the repeatability of the analysis1. Rinse the liner with HCl 1N and sonicate.2. After, rinse it with Acetone and sonicate.3. Then, soak the liner into a solution of 5% DMCS (Chlorodimethylsilane) in Hexane for 12 hours4. Wash the liner with Methanol and sonicate it in Methanol for 1 hour5. Dry the liner with nitrogen by warming it in order to eliminate any trace of solvents, totally.