Start-up Screens When the HI96822 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 start-up: 1. Using a plastic 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 HI96822’s units of measurement. PSU, ppt, Specic Gravity (20/20). Measurement Achieve fast, professional results: 1. Using a plastic pipette, drip sample onto the prism surface until the well is full. 2. Press the READ key and the results are displayed in the selected units. Easy to Operate Making a Standard Sodium Chloride Solution Sodium Chloride solutions can be used to check the accuracy of the meter. The table below lists two Sodium Chloride solutions and their expected ppt Seawater value. To make a Standard NaCl Solution (g/100 g), follow the procedure below: • Place 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 beaker so the total weight of the solution is 100g. Example Standard NaCl solution: NaCl (g) Water (g) Total Expected Seawater Value (ppt) 3.5% NaCl 3.50 96.50 100.000 34 10% NaCl 10.00 90.00 100.000 96 Examples of the importance of salinity: Aquaculture: Young salmon start their lives in fresh water. As they mature, they reach a stage (“smolt”) when they transition to salt water. When farming salmon, it is critically important to maintain proper salinity levels at each life stage to prevent unnecessary stress that could negatively aect growth and development. Salinity is a vital parameter to monitor accurately when raising eggs and larval sh, optimizing juvenile and adult growth, and culturing live food such as rotifers and artemia. Aquaria: Whether it is the world-renowned, eight million gallon Georgia Aquarium, or a 20 gallon reef tank at home, salinity is a crucial parameter to measure. In closed systems such as these, salinity is easily aected. As water evaporates, it leaves the salt behind, raising the salinity. When evaporated water is replaced with fresh water, the salinity is lowered. The potential for disaster is inherent in both situations. Accurate salinity measurements are crucial to help prevent any mishaps. Specifications HI96822 PSU Range 0 to 50 Resolution 1 Accuracy ±2 ppt Range 0 to 150 Resolution 1 Accuracy ±2 Specific Gravity (S.G.) Range 1.000 to 1.114 Resolution 0.001 Accuracy ±0.002 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 HI96822 is supplied with 9V battery, plastic pipette, quick reference guide with QR code for manual download, and instrument quality certificate. 13 Refractometers 13.13 www.hannainst.com |
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