The ornamental design for a salinometer, saccharimeter and pH meter, as shown and described.
FIG. 1 is a perspective view of salinometer, saccharimeter, and pH meter,
FIG. 2 is a front elevational view thereof,
FIG. 3 is a rear elevational view thereof,
FIG. 4 is a left side elevational view thereof,
FIG. 5 is a right side elevational view thereof,
FIG. 6 is a top plan view thereof; and,
FIG. 7 is a bottom plan view thereof.
The broken lines in the drawings are for the purpose of illustrating portions of the salinometer, saccharimeter and pH meter that form no part of the claimed design.