We claim the ornamental design for a sample buffer unit for clinical analyzer, as shown and described.
FIG. 1 is a front, top and right side perspective view of a sample buffer unit for clinical analyzer showing our new design;
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 drawing views are included for the purpose of illustrating portions of the sampler buffer unit for clinical analyzer that form no part of the claimed design.