Flip the cover of the meter so that it rests on the top of the prism. Obtain solution to be tested. The urine used for testing should be clear, without cloudiness or turbidity or sediment. Urine that is cloudy, turbid, or filled with sediment should be allowed to settle for 5 - 10 minutes. Draw the sample for testing once there is a clear layer of fluid in the specimen.
Cloudy specimens are difficult to read.
Place urine specimen or QC material in groove of cover filling the chamber fully. Hold the meter horizontally to the light while pressing a gloved finger on the cover plate. Rotate the eye piece until the scale comes into focus. Read the scale at the mark where the light and dark fields meet. Note the number appearing where the bright and dark fields cross the scale.