Achieve the results you are looking for with this polycarbonate triple scale beer and wine hydrometer. Optical quality polycarbonate provides all the clarity of glass with the added benefit of be virtually shatterproof. This is ideal to prevent breakage and possible contamination. Three scales: specific gravity, potential alcohol by volume and Brix provide invaluable data points that help the home brewer or wine Maker bring their skills to the next level. Individual scales can used independently or in conjunction with one another to determine If the starting worth or must has acceptable sucrose levels to achieve the desired results, monitor the fermentation process to see If variables should be altered, determine when the fermentation process is complete and easily calculate the approximate alcohol content of the finished product. Crystal clear polycarbonate, color coded bands that indicate when fermentation is complete, and easy to read Font make this an ideal product for both the novice and seasoned hobbyist. Overall Length 300mm (11.8 in) stem Length: 183 mm (7.2 in) specific gravity from .99 – 1.162 with a division accuracy of .002 percentage alcohol by volume scale: 0 – 20 percent with a division accuracy of .5 percent Brix scale: 0 - 35 Degrees with a division accuracy of .5 Degrees. All scales are calibrated to be read at 68 Degrees Fahrenheit. An easy to read conversion Chart is included for varying temperatures. For accurate results this product should be used in conjunction with a thermometer. Manufactured in strict accordance with NIST as outlined in nbs circular 555 military std-45662a and ISO 17025 where applicable. Certified the hydrometer meets or exceeds the tolerances of accuracy and physical specifications set forth by the NIST circular 55, American Society of testing materials e100-10 or the American petroleum Institute. Research, industrial and healthcare professionals rely on SP Scienceware for their sample handling needs. Sold worldwide, Bel-Art and H-B Instrument brand laboratory supplies include over 5,000 items from safety wash bottles to fume hoods, thermometers, racks, desiccators, hydrometers, ice buckets, scoops and spoons. Custom calibration services, plastic molding, specialty coatings and wire manufacturing are also available. Wilmad-LabGlass brand laboratory glassware complements Bel-Art and H-B Instrument with over 7000 items including NMR and EPR consumables and specialty glassware, as well as custom fabrication for individual glassware, glass repair services and OEM glass parts. SP Scienceware is a division of Warminster, PA based SP Industries which also include SP Scientific laboratory, thermal management, and pharmaceutical production equipment and SP Ableware aids for daily living.