The ornamental design for the part of a phmeter, as shown and described.
FIG. 1 is a perspective view of a pH meter;
FIG. 2 is a front view of the pH meter;
FIG. 3 is a rear view of the pH meter;
FIG. 4 is a left side view of the pH meter;
FIG. 5 is a right side view of the pH meter;
FIG. 6 is a top view of the pH meter;
FIG. 7 is a bottom view of the pH meter; and,
FIG. 8 is a reference view showing a transparent part.
This article is directed to measure hydrogen ion index (pH value) of a sample solution by measuring an electromotive force generated on a sensing film of a reference electrode (pH electrode). Parts of the design desired to be claimed is a reference electrode and a comparison electrode disposed in a tray where a sample is dropped. In this article, the comparison electrode can be mounted and demounted freely, and thus the solution measured can be added to a container in the tray.
The solid line part indicates a part desired to be claimed. In FIG. 8 showing a transparent part, the shaded gray part is transparent. The broken lines are for illustrative purposes only and form no part of the claimed invention.