Hanna Instruments HI-97734 Free & total Chlorine High Range portable photometer
HI-97734 is an advanced portable photometer for the measurement of HR free and total chlorine in water.
HI-97734 is an advanced portable photometer for the measurement of HR free and total chlorine 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.
- The HI-97734 meter measures free and total chlorine (Cl2) in water samples
- No warm up time before taking a measurement
- Tutorial mode for step-by-step instructions
- Uses either powder or cost saving liquid reagents
- CAL Check
| Free Chlorine Range | 0.00 to 10.00 mg/L (as Cl2 | |
| Free Chlorine Resolution | 0.01 mg/L | |
| Free Chlorine Accuracy | ±0.03 mg/L ±3% of reading | |
| Total Chlorine Range UHR | 0.00 to 10 mg/L (as Cl2 | |
| total Chlorine Resolution | 1 mg/L | |
| Total Chlorine Accuracy | ±0.03 mg/L ±3% of reading | |
| Chlorine Method | Adaptation of EPA DPD method 330.5 |
| Photometer/Colorimeter Light Source | Light emitting diode | |
| Photometer/Colorimeter Light Detector | Silicon photocell with narrow band interference filter @ 420 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 | |
| Ordering Information | HI-97734 is supplied with cuvettes (2), caps (2), plastic inserts for cuvettes (2), 1.5V AA batteries (3), instruction manual, and instrument quality certificate. |
| PLEASE NOTE: | In some cases, samples may contain other parameters which may interfere with results | |
| Interference may be caused by: | Alkalinity: above 1,000 mg/L CaCO3 if present as bicarbonate (HCO3 sample pH < 8.3); above 25 mg/L CaCO3 if present as carbonate (CO32, sample pH > 9.0). In both cases, it will not reliably develop the full amount of colour or it may rapidly fade (negative error). To resolve this, neutralise the sample with diluted HCl. Acidity: above 150 mg/L CaCO3. May not reliably develop the full amount of colour or it may rapidly fade (negative error). To resolve this, neutralise the sample with diluted NaOH. Hardness: in case of water with hardness greater than 500 mg/L CaCO3, shake the sample for approximately 2 minutes after adding the powder reagent. Bromine (Br2), Chloride dioxide (ClO2), Iodine (I2), Oxidised Manganese and Chromium, Ozone (O3): positive error. |
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.