The phrase "an example of a preparation" is correct and usable in written English.
You can use it when referring to a specific instance or case that illustrates what a preparation entails or looks like.
Example: "The recipe provided is an example of a preparation that can be made with minimal ingredients and time."
Alternatives: "a case of a preparation" or "a sample of a preparation".
Figure 1B shows an example of a preparation consisting primarily of distal tubular cells.
The activation of the mixing system was followed by some additional inter-burst firing recorded from a few electrodes, the extent of which varied somewhat among different preparations, resulting, sometimes, in slight decreases in Sync Ratio values (see Additional file 1: Figure S1, second raster from top, for an example of a preparation in which these effects were most apparent).
Illustrative images of poor sample preparation are shown in supplementary material Fig. S2, whereas Fig. 5B shows an example of a good preparation.
An example of a typical flap preparation is shown in Fig. 1.
Pre-operative preparation of patients is an example of a normal operations checklist.
It's great to see an example of that preparation grounded in the collaborative work of faculty and students.
An example of the preparation of green by mixing blue and yellow is seen in sample S10 from Flower front.
As an example of that, take the preparations for the rally, due to be held in Belgrade on the evening of August 19th.
The selection of features which exhibit high variability across the observations is another example of a data preparation step often performed when analyzing microarray data.
(a) Shows an example of electropherogram obtained following the metagenomic library preparation protocol described in paragraph 4.1.
The right person also has to act as the team's "closer". The seemingly simple task of conveying a warm box of meat to the judges' table is also a prime example of where preparation can allow a team to avoid unnecessary risk.
