Hanna Instruments HI-97708 Portable Photometer for Nitrite - High Range
The HI-97708 photometer is a compact and versatile meter suitable for field or bench measurements.
- Sophisticated optical system
- Meter validation using certified CAL Check cuvettes
- Tutorial mode guides the user step-by-step
- Auto logging
- Waterproof IP67, floating case
- GLP features
About the HI-97708 photometer
HI-97708 is an advanced portable photometer for the measurement of High Range Nitrite in water. This meter offers a superior optical system that utilises a reference detector and narrow band interference filters for extremely fast and repeatable measurements.
- High Range Nitrite - 0 to 150 mg/L (as NO2-)
- No warm up time before taking a measurement
- Tutorial mode for step-by-step instructions
- Displays results in multiple chemical forms
The HI-97708 has an innovative optical system that offers superior performance in accuracy, repeatability, and the short amount of time it takes to perform a measurement. This compact, waterproof meter is extremely user friendly with a tutorial mode that walks the user graphically, step by step, in performing a measurement. The use of a backlit dot matrix LED allows the use of virtual keys which makes the operation of the meter very intuitive including selecting different methods, reviewing GLP data, recalling the last 50 measurements, and customising the meter to user preferences.
HI-97708 is waterproof including the cuvette holder that is designed with ridges to protect the optical path from getting scratched by the cuvette and a protected battery compartment that holds three AA batteries. The compact design fits comfortably in the hand for use in the field or on a table for benchtop use. The LCD is 71 mm (2.75") by 37 mm (1.6") and is backlit for easy viewing under all conditions.
Each HI-97708 is delivered in a cardboard box and is supplied with:
- Sample cuvette (2 pcs.)
- Sample cuvette cap (2 pcs.)
- Plastic stopper (2 pcs.)
- 1.5V AA Alkaline batteries
- Instrument quality certificate
- Instruction manual
Reagent sets to buy separately
- HI-93708-01 Nitrite HR Reagent - 100 tests
- HI-93708-03 Nitrite HR Reagent - 300 tests
Advanced optical system
- LED that generates very little heat.
- 8 nm narrowband interference filter that is accurate to +/- 1 nm and offers 25% increase in light efficiency.
- Reference detector that modulates the voltage to LED for consistent light output.
- A concave focusing lens that reduces errors from imperfections in the cuvette.
About Nitrites
Nitrites can be harmful to aquatic organisms even in low concentrations. For this reason, they are closely monitored in aquaculture facilities. In cooling towers, however, an adequate amount of nitrites is necessary to prevent corrosion. In high concentrations, they can be harmful to the environment and to humans. They are, therefore, normally monitored to verify the quality of water for domestic use, as well as lakes and ponds.
Nitrites are an intermediate product in the nitrogen cycle and are produced by ammonia oxidation with water, or even originate in industrial waste directly. They must not be present in drinking water.
Specifications
| Nitrite Range | 0 to 150 mg/L (as NO2-) |
| Resolution | 1 mg/L |
| Accuracy | ±4 mg/L ±4% of reading at 25 °C |
| Method | Adaptation of the Ferrous Sulphate Method |
| Photometer/Colorimeter Light Source | Light emitting diode |
| Photometer/Colorimeter Light Detector | Silicon photocell with narrow band interference filter @ 575 nm |
| Bandpass Filter Bandwidth | 8 nm |
| Bandpass Filter Wavelength Accuracy | ±1.0 nm |
| Cuvette Type | round, 24.6 mm diameter (22 mm inside) |
| GLP | Date, time of last calibration |
| Display | 128 x 64 pixel B/W LCD with backlight |
| Logging Type | automatic logging |
| Logging Memory | 50 measurement |
| Battery Type/Life | 1.5V AA battery (3 pcs.) / > 800 measurements (without backlight) |
| Automatic Shut-Off | After 15 minutes of inactivity (30 minutes before a READ measurement) |
| Environment | 0 to 50°C (32 to 122°F); relative humidity: 100% (IP 67, floating case) |
| Weight | 380g with batteries |
| Dimensions | 142.5 x 102.5 x 50.5 mm |
| Casing protection rating | IP67, floating case |
| Ordering Information | HI-97708 is supplied with cuvettes (2), caps (2), plastic inserts for cuvettes (2), 1.5V AA batteries (3), instruction manual, and instrument quality certificate. |
Downloads
Frequently Asked Questions
Clear answers to help you choose the right water testing solution with confidence
Which brands of water testing kits do you supply?
Do you provide kits for both home and professional use?
Yes — whether you’re a pool or spa owner, aquarium keeper, utility company, or a university laboratory, we have the right solution for your needs.
Can I arrange servicing or calibration for my photometer?
Absolutely. We also provide servicing and calibration to keep your photometers accurate and reliable.
How quickly do you dispatch orders?
Orders placed before 2:30 pm (Monday–Friday) are dispatched the same day. We also ship on Saturdays for your convenience.
Which couriers do you use for delivery?
We deliver through UPS, DPD, and Royal Mail. You can also choose to upgrade to next-day delivery at checkout.
What is your return policy?
We accept returns within 14 days of delivery provided the items are unused, in their original packaging, and in resalable condition. Please contact our team before returning any items.
Can I place bulk or business orders?
Yes, we welcome bulk, trade, and institutional orders. For tailored pricing or large quantities, please get in touch with us directly.
How can I get help if I’m unsure which kit to buy?
You can call us at 📞 +44 (0)115888 2726 and our team will guide you in choosing the most suitable kit for your needs.