Abstract: A device includes: a first portion configured to be grasped by the hand of the user, and a second portion defining a reservoir containing a control material, wherein the control material contains a target analyte in a known or predetermined concentration. A method of verifying the accuracy of an analyte monitoring device includes receiving a fluid sample, identifying the fluid sample as a control solution, and analyzing the fluid sample.

Abstract: A handle particularly for use with plastic grocery bags is disclosed. The bag is of the type having two side walls with openings near the top for carrying the bag. The elongate handle is substantially rigid and the ends of the handle have notches which receive edges of the side walls at the openings. The notches are shaped such that the handle will not accidentally separate from the bag when it is set down. In a preferred form, the handle is of thin plastic which is arcuate in transverse cross section and placed in the bag opening so that the convex side faces downwardly. An intermediate part of the handle can have two longitudinally-spaced openings to receive hanger hooks to facilitate carrying clothes in a clothes bag when traveling.