Hanna Instruments-96724 Free and Total Chlorine Meter, Low Range

Hanna InstrumentsSKU: HI-96724

Sale price£454.80

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The Hanna Hanna Instruments-96724 is an auto-diagnostic portable photometer for accurately measuring free and total chlorine.

Total chlorine is given by the sum of free chlorine plus combined chlorine, where free chlorine combines with nitrogen to produce chloramines. Chloramines is harmful to aquatic life and damages water treatment plants that use membranes for water purification (e.g. reverse osmosis). Thus it is important to monitor levels of both free and total chlorine.

Chloramines concentration in water depends on pH, temperature, the initial ratio of chlorine and amines, chlorine demand and total time of exposure. Both forms of chlorine (free and combined) can exist at the same time, though they need to be measured separately.

HI 96724 is an auto-diagnostic portable photometer for accurately measuring free and total chlorine. The advanced optical system employs a specialised tungsten lamp and a narrow band interference filter, assuring accurate readings between 0.00 to 5.00 mg/L.

This instrument is equipped with Cal Check® validation function and standards to validate good performance at any time. Taking just a few short steps, the validation procedure is user-friendly and ensures that the meter is properly calibrated wherever you go. Hanna photometers use the exclusive ready-made, NiST traceable standards to verify the performance of the instrument and recalibrate if necessary.

Cuvettes are constructed from specialised optical glass to ensure the best and most consistent results. The positive locking system ensures that the cuvette is in the same position every time it is placed into the measuring cell. Our sample cell is designed to fit a cuvette with a wide neck to make it easier to add both sample and reagents.

All instruments are factory calibrated and the electronic and optical design minimises the need for frequent calibration. Ideal for field applications, these meters are splash proof and the lamp and filter units are protected from dust or dirt by a transparent barrier. Display messages aid the user during routine operation.

The auto-off feature will disengage the meter after 10 minutes of non-use in measuring mode or 1 hour while in calibration mode. Hanna Instruments-96724 utilises an adaptation of the USEPA Method 330.5 and Standard Method 4500-Cl G. The reaction between chlorine and the reagents causes a pink tint in the sample.

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