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--- massegb [2026/04/08 19:12] – [Preparing samples] administrator
+++ massegb [2026/04/08 19:19] (aktuell) – [Preparing samples] administrator
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-To prepare your sample a solution of the substance must be prepared. For most cases toluene has proven to be a good allrounder. It has a high boiling point which is needed because solvents with a lower boiling point may evaporate early which can lead to a clogged cannula. Some substances, especially more polar ones may not be readily dissolved in toluene. In these cases one to a few drops of fluorobenzene proved to be helpful.
+To prepare your sample, you must first prepare a solution of the substance. In most cases, toluene has proven to be an effective solvent. It has a high boiling point, which is necessary because solvents with lower boiling points may evaporate prematurely, leading to a clogged cannula. Some substances, especially polar ones, may not dissolve easily in toluene. In these cases, adding one to a few drops of fluorobenzene has proven helpful. Since this method is very sensitive, dissolving 1 mg of substance in 1 mL of solvent is more than enough. It is also good practice to first prepare the solution in another vial and then filter it into the actual vial to prevent residual solids from clogging the cannula.