This lightweight and compact pocket refractometer is ideal for determining % moisture in honey. In the field or indoors, measurements are quick and accurate. Simply apply two to three drops of sample onto the prism, press the start key, and the percentage value is displayed in seconds. Calibration is simple â€“ clean off the prism, add water, and press the zero key. The easy to read LCD display eliminates the possibility of interpretation errors. Clean up is simple, as these units can be easily cleaned under running water.