storage case and two AAA batteries.
This digital pocket refractometer utilizes the refractive index method for measuring urine specific gravity. Unit features automatic temperature compensation for quick and efficient measurements. The lightweight, water-resistant IP65-rated design allows you to take measurements anywhere. Operation is simple - place the sample on the prism and press the start key; the measurement value is displayed in seconds. Calibration is simple – clean off the prism, add water, and press the zero key.
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