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Hanna Instruments Free Chlorine Portable Photometer with CAL Check – HI97701

The HI97701 is a compact, waterproof photometer for precise measurement of free chlorine in water up to 5.00 mg/L. Its advanced optical system ensures fast, accurate, and repeatable readings. The meter features a backlit dot matrix LCD with tutorial mode and virtual keys for intuitive operation. Ideal for both field and benchtop use, with pre-programmed methods for powder or liquid reagents.

  • Stable & High-Efficiency LED Light Source ensures accurate, consistent readings
  • CAL Check Functionality verifies performance and allows NIST-traceable calibration
  • Tutorial Mode & Method Options guide users step by step for powder or liquid reagents
  • Auto-off Protection, Built-in Reaction Timer, and Large 25 mm cuvette for precise measurements

Description

The HI97701 photometer measures free chlorine in water up to 5.00 mg/L using pre-programmed calibration curves for powder or liquid reagents. Its innovative optical system, including LED with 8 nm narrowband filter, reference detector, and concave focusing lens, ensures high accuracy, repeatability, and fast readings. The backlit dot matrix LCD with virtual keys and tutorial mode guides users step by step, making the meter extremely user-friendly. Users can recall the last 50 readings, review GLP data, and customize settings for their preferences.

The meter is fully waterproof, including the cuvette holder and gasketed battery compartment, and runs on three AA batteries capable of about 800 measurements. Additional features include CAL Check verification, auto-off after 15 minutes, built-in reaction timer, and a large 25 mm cuvette for accurate colorimetric readings even in low absorbance samples. Compact and ergonomic, the HI97701 is ideal for reliable field or bench measurements, ensuring both precision and convenience.

Features

  • Stable & High-Efficiency LED Light Source: Provides consistent, low-heat illumination for accurate measurements.
  • Reference Detector: Compensates for voltage fluctuations and ambient temperature changes for reliable readings.
  • CAL Check Functionality: Verify meter performance and update calibration using NIST-traceable standards.
  • Tutorial Mode: Step-by-step guidance for users throughout the measurement process.
  • Multiple Measurement Methods: Select powder reagents in packets or low-cost liquid reagents in dropper bottles.
  • Built-in Reaction Timer: Ensures proper reaction time for consistent colorimetric measurements.
  • Large 25 mm Cuvette: Longer path length allows accurate measurements even at low absorbance.
  • Intuitive Backlit Dot Matrix Display: Virtual keys, battery status, error messages, and contextual help.
  • Auto-off Protection: Automatically shuts off after 15 minutes of inactivity to conserve battery life.
  • Measures Free Chlorine in water up to 5.00 mg/L.
  • Recall last 50 readings and review GLP data.
  • Compact, ergonomic design for field or benchtop use.

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