- CAL Check™ Validation and Calibration
- Built-in Timer
- Automatic shut off
The HI96728 portable photometer is for the measurement of nitrate as nitrogen. Hanna's portable photometers feature an advanced optical system; the combination of a special tungsten lamp, a narrow band interference filter, and silicon photodetector ensure accurate photometric readings every time. The Hanna exclusive CAL Check™ feature utilizes ready-made, NIST traceable standards to verify both meter validation and calibration. The exclusive cuvette locking system ensures that the cuvette is inserted into the measurement cell in the same position every time to maintain a consistent path length.
Features at-a-glance
CAL Check™ - Allows for performance verification and calibration of the meter using NIST traceable standards.
GLP - Review of the last calibration date
Auto-shut off - Automatic shut off after 10 minutes of non-use when the meter is in measurement mode. Prevents wastage of batteries in the event the meter is accidentally not turned off.
Battery status indicator - Indicates the amount of battery life left.
Built in timer - Display of time remaining before a measurement is taken. Ensures that all readings are taken at the appropriate reaction intervals for the test being performed.
Error messages - Messages on display alerting to problems including no cap, high zero, and standard to low.
Cooling lamp indicator - To maintain the desirable wavelength to be used for absorbance it is necessary to ensure component are not overheated from the heat generated by the tungsten lamp. Each photometer is designed to allow a minimal amount of time for components to cool. The cooling lamp indicator is displayed prior to a reading being taken.
Units of measure - Appropriate unit of measure is displayed along with reading.
Specifications| Range | 0.0 to 30.0 mg/L (ppm) NO₃-N (nitrate-nitrogen) |
| Resolution | 0.1 mg/L (ppm) |
| Accuracy @ 25°C (77°F) | ±0.5 mg/L ±10% of reading |
| Light Source | tungsten lamp |
| Light Detector | silicon photocell with narrow band interference filter @ 525 nm |
| Method | adaptation of the cadmium reduction method |
| Auto-off | after ten minutes of non-use in measurement mode; after one hour of non-use in calibration mode; with last reading reminder |
| Environment | 0 to 50°C (32 to 122°F); RH max 95% non-condensing |
| Battery Type | 9V battery |
| Dimensions | 193 x 104 x 69 mm (7.6 x 4.1 x 2.7”) |
| Weight | 360g (12.7oz.) |
| Ordering Information | HI96728 is supplied with sample cuvettes (2) with caps, 9V battery, instrument quality certificate and instruction manual. |
| Notes | Chloride above 100 mg/L will cause a negative interference with the nitrate chemistry. We do not recommend the HI96728 for measuring nitrate in saltwater. |
| Warranty | 2 years |
US 1134 
MY 827 
CN 180 
AP 153 
AU 91 
CA 80 
DE 73 
GB 70 
