Hanna Instruments HI96813 Digital Refractometer, For Measurement of Sugar in Wine, 9V Battery, 0.0-25.0 Percent v/v, +/-0.2 v/v Accuracy, 0.1 Percent v/v Resolution

Digital refractometer for measurement of sugar in wine (percent brix and (percent v/v). Quick, accurate results, readings are displayed in approximately 1.5 seconds. Single point calibration with distilled or deionized water. Small sample size, can be as small as 2 metric drops. Automatic shut-off after three minutes of non-use. Stainless steel sample well, easy to clean and corrosion resistant. ABS thermoplastic casing. This optical instrument employs the measurement of the refractive index to determine parameters pertinent to the wine industry. The actual measurement of the refractive index is simple and quick and provides the vintner a standard accepted method for sugar content analysis. Samples are measured after a simple user calibration with deionized or distilled water. Within seconds, the instrument measures the refractive index of the grape must. These digital refractometers eliminate the uncertainty associated with mechanical refractometers and are ideal for fast, reliable measurements in the field. The HI 96813 allows the user to tailor the instrument to their specific needs based on their experience, since no fixed conversion factor is universally applicable. The first conversion is based on the percent brix value and an adjustable conversion factor between 0.50 and 0.70 (0.55 is a common value). Potential alcohol (percent v/v) = (0.50 to 0.70) x percent brix. One drawback of the above equation is that it does not take into account the nonfermentable sugars and extract. A second equation was also added that takes these factors into account and can give a more accurate estimate of the alcohol content in the finished wine. This conversion is named "C1" on the meter, and uses the following equation: potential alcohol (percent v/v) = 0.059 x [(2.66 x degree Oe) - 30] (C1). HI96813 is supplied with battery and instruction manual.