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Free Chlorine and Ultra High Range Total Chlorine Portable Photometer - HI97771

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The HI97771 Free and Total (Ultra High Range) Chlorine Photometer combines accuracy and ease of use in a simple, portable design. The advanced optical system provides lab-quality accuracy while its user-friendly design is easy for any user making it the perfect photometer for your water quality testing needs. The HI97771 meter measures free chlorine in water samples from 0.00 to 5.00 mg/L (ppm) and total chlorine from 0 to 500 mg/L (ppm).

  • No warm up time needed before taking a measurement.
  • Tutorial mode for easy step-by-step instructions.
  • Uses either powder or cost saving liquid reagents.

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RSD 32.290RSD 50.370


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Portable Photometer Hand Menu

Better Features for Better Testing

Let your photometer guide you through setup, calibration, and testing with on-screen tutorials and animations so you always know the next step. Simply access Tutorial Mode at any stage in the setup or measurement process with the dedicated help key.

The auto-off feature prolongs battery life for peace-of-mind and energy savings if the meter is accidentally left on.

When the battery level is below 10%, a warning symbol will blink to indicate low battery condition. When low battery power may affect your results, the meter will shut down to avoid erroneous readings caused by low battery level.

Data Logging

Missed a measurement? No need to worry because your photometer will automatically log the last 50 measurements. The results can be viewed instantly using the Log Recall Menu.

CAL CheckTM Validation

Hanna’s exclusive CAL CheckTM feature provides a stress-free, straightforward way to ensure your photometer is working properly. Simply insert the certified CAL CheckTM standards and let your meter guide you through validation. If your photometer is out of specification for any reason, simply calibrate to your standard.

Advanced Optical System

A Light Emitting Diode (LED) provides more light while using less power and a narrow band interference filter results in more accurate and repeatable readings.

Built Better

Designed to withstand the knocks, drops, and spills of real life, the new IP67 body ensures top performance in any environment. Internal optics are sealed from outside dust, dirt, and water. In addition, it floats, just in case you drop your meter in water. This photometer uses an exclusive positive‑locking system to ensure that the cuvettes are placed into the holder in the same position for accurate readings every time.

Portable Design

Made to fit comfortably in your hand for on-the-go testing or sit on a table for benchtop use, a backlit LCD display provides at-a-glance readings from any angle, day or night. The supplied AA batteries provide life for more than 800 measurements.

Free And Total Chlorine Ultra High Hi97771

We believe that buying a meter should be simple. Your HI97715 photometer has many of the necessary accessories needed for successful measurements.

Each HI97715 is supplied with:

  • Sample cuvette (2 pcs.)
  • Sample cap (2 pcs.)
  • Plastic stopper (2 pcs.)
  • Alkaline batteries: 1.5V AA (3 pcs.)
  • Instruction manual
  • Meter quality certificate

Upgrade to the Free Chlorine &Total Chlorine Ultra High Range Photometer Kit (includes the CAL CheckTM Standards) for the most economical option for testing.

Each HI97771C is supplied with:

  • Sample cuvette (2 pcs.)
  • Sample cap (2 pcs.)
  • Plastic stopper (2 pcs.)
  • A ZERO ‑ CAL CheckTM Cuvette A
  • HI97701B ‑ CAL CheckTM Cuvette B for Free Chlorine (Powder) & (Liquid)
  • HI97771B ‑ CAL CheckTM Cuvette B for Total Chlorine UHR
  • Cloth for wiping cuvettes
  • Scissors
  • Alkaline batteries: 1.5V AA (3 pcs.)
  • Instruction manual
  • Meter quality certificate
  • CAL CheckTM standard certificate


Specification NameDetail
Chlorine, Free UHR Range0.00 to 5.00 mg/L (ppm)
Chlorine, Free UHR Resolution0.01 mg/L
Chlorine, Free UHR Accuracy±0.03 mg/L ±3% of reading
Chlorine, Free UHR MethodAdaptation of the EPA DPD method 330.5
Chlorine, Total Ultra HR Range0 to 500 mg/L
Chlorine, Total Ultra HR Resolution1 mg/L
Chlorine, Total Ultra HR Accuracy±3 mg/L ±3% of reading at 25 °C
Chlorine, Total Ultra HR MethodAdaptation of the Standard Methods for Examination of Water and Wastewater, 20th edition, 4500‑Cl
Light Sourcelight emitting diode
Light Detectorsilicon photocell
Bandpass Filter Bandwidth8 nm
Bandpass Filter Wavelength Accuracy±1.0 nm
Logging50 readings (auto logging)
Power SupplyAlkaline 1.5 V AA (3 pcs.)
Battery Life> 800 measurements (without backlight)
Auto-offAfter 15 minutes of inactivity (30 minutes before a READ measurement)
Environment0 to 50 °C (32 to 122 °F); 0 to 100% RH, non‑serviceable
Dimensions142.5 x 102.5 x 50.5 mm (5.6 x 4.0 x 2.0″)
Weight380 g (13.4 oz.)
Warranty2 years

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Dodatne informacije


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