Product no.: 114892
The HI96822 is a rugged, portable digital refractometer designed for the measurement of salinity of natural or artificial seawater.
The HI96822 displays results in three popular measurement units: Practical Salinity Units (PSU), salinity in parts per thousands (ppt) and specific gravity (S.G. (20/20)).
The instrument’s high accuracy and simple operation gives reliable results each and every time. All readings are automatically compensated for temperature variations and displayed with a 1.5 second response time.
The sealed flint glass prism and stainless steel well are easy to clean. Just wipe with a soft cloth in preparation for the next sample.
Features at-a-glance:
One-point calibration
- Calibrate with distilled or deionized water
Small sample size
- Sample size can be as small as 2 metric drops (100 μl)
Automatic Temperature Compensation (ATC)
- Samples automatically compensated for temperature variations
Quick, accurate results
- Readings are displayed in approximately 1.5 seconds
Dual-level LCD
- The dual-level LCD displays measurement and temperature readings simultaneously
Making a Standard 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 |
| Salinity Content Range | 0 to 50 PSU; 0 to 150 ppt; 1.000 to 1.114 Specific Gravity (20/20) |
|---|
| Salinity Content Resolution | 1 PSU; 1 ppt; 0.001 Specific Gravity (20/20) |
|---|
| Salinity Content Accuracy (@20ºC/68ºF) | ±2 PSU; ±2 ppt; ±0.002 Specific Gravity (20/20) |
|---|
| Temperature Range | 0 to 80°C (32 to 176°F) |
|---|
| Temperature Resolution | 0.1°C (0.1°F) |
|---|
| Temperature Accuracy | ±0.3 °C (±0.5 °F) |
|---|
| Temperature Compensation | automatic between 0 and 40°C (32 to 104°F) |
|---|
| Measurement Time | approximately 1.5 seconds |
|---|
| Minimum Sample Volume | 100 μL (to cover prism totally) |
|---|
| Light Source | yellow LED |
|---|
| Sample Cell | stainless steel ring and flint glass prism |
|---|
| Auto-off | after three minutes of inactivity |
|---|
| Enclosure Rating | IP65 |
|---|
| Battery Type / Life | 9V / approximately 5000 readings |
|---|
| Dimensions / Weight | 192 x 102 x 67 mm (7.6 x 4.01 x 2.6”) / 420 g (14.8 oz.) |
|---|
| Ordering Information | HI96822 is supplied with battery and instruction manual |
|---|
WEEE-Reg.-Nr. 93841070 HANNA Instruments
German
English