1. Product Overview
The Hanna Instruments HI97710 is a compact, multiparameter colorimeter designed for accurate measurement of Free Chlorine, Total Chlorine, and pH levels. This instrument is ideal for routine field analysis in various applications, including water quality testing in pools, spas, and environmental monitoring.
Key features include:
- Designed for routine field analysis.
- Compact and IP67 waterproof housing for durability.
- Advanced LED optical system ensures precise measurements.
- Integrated timer for accurate reaction time control.
- GLP (Good Laboratory Practice) function for data traceability.
Figure 1: The Hanna Instruments HI97710 Multiparameter Colorimeter shown with a sample cuvette. The device is white with a digital display and control buttons, designed for portable water quality testing.
2. Safety Information
Please read this manual carefully before operating the instrument. Failure to do so may result in damage to the instrument or personal injury. Always follow standard laboratory safety procedures when handling chemicals and samples.
- Do not immerse the instrument in water beyond its IP67 rating.
- Use only reagents specified by Hanna Instruments for accurate results.
- Keep the instrument and reagents out of reach of children.
- Dispose of chemical waste according to local regulations.
- Avoid direct exposure of the optical system to strong light sources.
3. Package Contents
Verify that all items are present and in good condition upon unpacking:
- HI97710 Multiparameter Colorimeter
- Sample Cuvettes with Caps (quantity may vary)
- Instruction Manual
- Batteries (AA 1.5V, quantity may vary)
- Cuvette Cleaning Cloth
Note: Reagents for Free Chlorine, Total Chlorine, and pH are sold separately.
4. Setup
4.1 Battery Installation
- Locate the battery compartment cover on the back of the instrument.
- Use a coin or screwdriver to turn the battery cover counter-clockwise to unlock it.
- Insert the specified AA 1.5V batteries, observing the polarity markings (+/-).
- Replace the battery cover and turn it clockwise to lock it securely.
4.2 Initial Power-On
Press the ON/OFF button to power on the instrument. The display will show a brief startup sequence before entering the measurement mode.
5. Operating Instructions
5.1 General Measurement Procedure
- Prepare the Cuvette: Ensure cuvettes are clean and free of scratches. Use the provided cleaning cloth to wipe the cuvette exterior before insertion.
- Zero the Instrument: Fill a clean cuvette with 10 mL of deionized water (or blank solution as specified by the reagent instructions). Insert the cuvette into the instrument's holder, ensuring the cap is on. Press the ZERO button. The display will show "ZERO" and then "0.00" or "READY".
- Add Reagent: Remove the cuvette from the instrument. Add the appropriate reagent to the sample according to the reagent instructions. Cap the cuvette and gently invert to mix.
- Measure the Sample: Insert the prepared sample cuvette into the instrument. Press the READ button. The integrated timer will start. Once the timer completes, the instrument will display the measurement result.
5.2 Measuring Free Chlorine
Follow the general measurement procedure (Section 5.1). Use the specific DPD Free Chlorine reagent for this test. The instrument will display the concentration of free chlorine in mg/L (ppm).
5.3 Measuring Total Chlorine
Follow the general measurement procedure (Section 5.1). Use the specific DPD Total Chlorine reagent for this test. The instrument will display the concentration of total chlorine in mg/L (ppm).
5.4 Measuring pH
Follow the general measurement procedure (Section 5.1). Use the specific pH reagent for this test. The instrument will display the pH value of the sample.
5.5 GLP Function
The GLP function allows users to view the last calibration date and time. Refer to the instrument's on-screen menu for navigation to the GLP information. This feature aids in maintaining good laboratory practices and traceability of measurements.
6. Maintenance
6.1 Cleaning the Instrument
Wipe the exterior of the instrument with a damp cloth. Do not use abrasive cleaners or solvents. Keep the cuvette holder clean and free of dust or spills to ensure accurate readings.
6.2 Cuvette Care
Always use clean cuvettes. Rinse cuvettes thoroughly with deionized water after each use. Dry the outside of the cuvette with a lint-free cloth before inserting it into the instrument.
6.3 Storage
Store the instrument in a cool, dry place away from direct sunlight and extreme temperatures. Ensure the battery compartment is sealed. If storing for extended periods, remove the batteries to prevent leakage.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Instrument does not power on. | Dead or incorrectly installed batteries. | Check battery polarity; replace batteries. |
| Inaccurate or inconsistent readings. | Dirty cuvette, expired reagents, improper zeroing, or sample contamination. | Clean cuvette, use fresh reagents, re-zero instrument, ensure sample purity. |
| "Light Error" message. | Cuvette not inserted correctly, dirty cuvette, or optical system obstruction. | Reinsert cuvette, clean cuvette, check for debris in cuvette holder. |
8. Specifications
| Model | HI97710 |
| Parameters | Free Chlorine, Total Chlorine, pH |
| Manufacturer | Hanna Instruments |
| Package Dimensions | 22 x 20 x 18 cm |
| Package Weight | 2.3 kg |
| Waterproof Rating | IP67 |
| Optical System | LED |
| Power Supply | AA 1.5V Batteries (not included in all packages) |
9. Warranty and Support
Hanna Instruments products are warranted against defects in workmanship and materials when used for their intended purpose and maintained according to instructions. For specific warranty terms and conditions, please refer to the warranty card included with your product or visit the official Hanna Instruments website.
For technical support, service, or to order replacement parts and reagents, please contact your local Hanna Instruments representative or visit www.hannainst.com.