See page10.166 for Checker HC accessories HI759 Maple Syrup Digital Grader Handheld Colorimeter • Easy to use • Results are displayed % transmittance • Small size, big convenience The season of maple syrup production spans several months between winter and spring each year. As the days get longer and warmer and the nights stay below freezing, the sap from maple trees begins to ow and tapping begins. At the beginning of production season, the sap produces a lighter, sweeter syrup comprised of sucrose as the main sugar content. As the season progresses and temperatures rise, microorganisms grow and colonize the sap as it is collected. These bacteria, while not harmful, convert part of the sucrose present into invert sugars, glucose and fructose. The level of invert sugars in the sap, as well as the chemical processes that occur during boiling, are responsible for creating a darker and stronger avored syrup product. Maple syrup grading standards for the United States and Canada allow consumers to easily distinguish between the dierent grades of syrup, regardless of the place of origin. The HI759 Maple Syrup Digital Grader is a handheld colorimeter designed for quick, accurate determination of the grade of maple syrup. The HI759 is designed as a more accurate alternative to temporary and permanent visual grading kits, providing quick, accurate results in four easy steps. Step One - Add a sample tothe included cuvette(s). Step Two - Insert the glycerol reference cuvette, close the lid, and press the button to zero. Step Three - Remove the glycerol reference cuvette and replace with a sample cuvette. Step Four - Close the lid and press the button. Reading will be taken automatically and the results displayed. This Maple Syrup Digital Grader measures the percent light transmittance of the syrup and directly displays the percentage results on the large, easy to read LCD display. Located on the back of the meter is a chart referencing the percent light transmittance to the grade. Eliminating the subjectivity of grading by eye and the potential for mislabeling, the HI759 is grading made simple. Specifications HI759 Range 0 to 100% transmittance Resolution 1% transmittance Accuracy ±4% transmittance Light Source Light Emitting Diode @ 560 nm Light Detector Silicon photocell Environment 0 to 50 °C (32 to 122 °F); max. 95% RH non-condensing Battery Type 1.5V AAA Alkaline Auto-off After 10 minutes of non-use Dimensions 86.0 x 61.0 x 37.5 mm (3.4 x 2.4 x 1.5”) Weight 64 g (2.3 oz) Ordering Information HI759 Checker®HC is supplied with sample cuvette and cap (3 pcs.), glycerol reference cuvette, 20 mL beakers (3 pcs.), 1.5V AAA Alkaline battery (1 pc.), and instruction manual. Accessories HI759-11 Glycerol standard cuvettes (2 pcs.) HI731359 Round glass cuvettes with caps (25 pcs.) State of Vermont Grades and Standards (New IMSI* standards) Grade A Color Classes Taste Light Transmittance Grade A Golden Delicate ≥ 75 Grade A Amber Rich 50 to 74 Grade A Dark Robust 25 to 49 Grade A Very Dark Strong < 25 * International Maple Syrup Institute | www.hannainst.com 10 10.148 Photometers Checker®HC
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