Startup Screens When the HI96821 is turned on, all of the LCD segments will be displayed followed by the percentage of battery life remaining. Calibration Perform a quick and easy calibration after startup: 1. Using a pipette, completely cover the prism in the sample well with distilled or deionized water. 2. Press the ZERO key. Unit Selection Just press the RANGE key to cycle through the HI96821’s units of measurement (g/100 g, g/100 mL, Specic Gravity and °Baumé). Measurement Achieve fast, accurate results: 1. Using a plastic pipette, place sample onto the prism surface until the well is full. 2. Press the READ key and the results are displayed in the selected units. Making a Standard Sodium Chloride Solution To make a standard NaCl solution (g/100 g), follow the procedure below: • Place a container (such as a glass vial or dropper bottle that has a cover) on an analytical balance. • Tare the balance. • To make an X NaCl solution weigh out X grams of high purity dried Sodium Chloride (CAS #: 7647-14-5: MW 58.44) directly into the container. • Add distilled or deionized water to the container so the total weight of the solution is 100 g. Example with g/100 g NaCl: g/100 g NaCl 10 g NaCl 10.000 g Water 90.000 g Total 100.000 Easy to Operate Specifications HI96821 g/100 g Range 0.0 to 28.0 Resolution 0.1 Accuracy ±0.2 g/100 mL Range 0.0 to 34.0 Resolution 0.1 Accuracy ±0.2 Specific Gravity (S.G.) Range 1.000 to 1.216 Resolution 0.001 Accuracy ±0.002 °Baumé Range 0.0 to 26.0 Resolution 0.1 Accuracy ±0.2 Temperature Range 0.0 to 80.0 °C (32.0 to 176.0 °F) Resolution 0.1 °C / 0.1 °F Accuracy ±0.3 °C / ±0.5 °F Additional Specifications Temperature Compensation Automatic, between 10.0 and 40.0 °C (50.0−104.0 °F) Measurement Time Approximately 1.5 seconds Minimum Sample Volume 100 µL (cover prism totally) Light Source Yellow LED Sample Cell Stainless steel ring and flint glass prism Case Material ABS Enclosure Rating IP65 Battery Type / Life 9V / 5000 readings Auto-off After 3 minutes of non-use Dimensions 192 x 102 x 69mm (7.6 x 4.1 x 2.7”) Mass 350 g (12.3 oz.) Ordering Information HI96821 is supplied with 9V battery, plastic pipette, quick reference guide with QR code for manual download, and instrument quality certificate. 13 Refractometers 13.11 www.hannainst.com |
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