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DESCRIPTION
5. DESCRIPTION
5.1. GENERAL DESCRIPTION & INTENDED USE
The
HI97725
is an auto-diagnostic portable photometer that benefits from Hanna’s
years of experience as a manufacturer of analytical instruments. It has an advanced
optical system that uses a Light Emitting Diode (LED) and a narrow band interference
filter that allows for accurate and repeatable readings.
The optical system is sealed from outside dust, dirt and water. The meter uses an
exclusive positive-locking system to ensure that the cuvettes are placed into the holder
in the same position every time.
With the CAL Check™ functionality, users are able to validate the performance of the
instrument at any time and apply a user calibration (if necessary). Hanna Instruments
CAL Check cuvettes are made with NIST traceable standards.
The built-in tutorial mode guides users step-by-step through the measurement
process. It includes all steps required for sample preparation, the required reagents
and quantities.
The
HI97725
meter measures four important parameters in the treatment and
disinfection of drinking water, waste water, and swimming pools.
Chlorine is a widely used disinfectant. In order for chlorine to be effective the pH of the
water should be less then pH 8.0. The method is an adaptation of the US EPA Method
330.5, DPD Colori metric Method.
Cyanuric Acid is added to increase the life of chlorine, without it chlorine levels can be
reduced by up to 90% in hours when exposed to sunlight. The method is an adaptation
of the Turbidimetric Method.
The method for pH is an adaptation of the Phenol Red Method.
The
HI97725
photometer is a compact and versatile meter suitable for field or bench
measurements, featuring a:
• Sophisticated optical system
• Meter validation using certified CAL Check cuvettes
• Tutorial mode guides the user step-by-step
• Auto logging
• Waterproof IP67, floating case
• GLP features
