Packaging and storage
Preserve in the original container, in a dry place, at controlled room temperature.
Identification
Remove the Strips from the container, and test them as directed in the instructions provided by the manufacturer, first in dextrose solution (1 in 50) and then in sucrose solution (1 in 50): color develops from the dextrose solution, but not from the sucrose solution.
Calibration
Glucose standard solutions
Dissolve anhydrous dextrose in separate portions of freshly voided, normal, glucose-free human urine, previously adjusted to a pH of 6.0 with dilute formic acid (1 in 5), and with sodium hydroxide solution (1 in 2), respectively, to obtain separate solutions of the final concentrations corresponding to the color chart calibrations provided. Allow the standard solutions to stand for 1 hour prior to use.
Procedure
Remove the Strips from the container, and test each Glucose standard solution as directed in the instructions provided by the manufacturer: the colors formed on each of the Strips during the specified times match the colors on the color chart provided.