Aluminum Portable Photometer - IC-HI97712

The HI97712 uses an adaptation of the Aluminon Method per Standard Methods for the Examination of Water and Wastewater, 23rd edition, to measure aluminum concentrations up to 1.00 mg/L (ppm). When the aluminon buffer reagent is added to samples containing aluminum, the sample will turn a reddish hue; the greater the concentration, the deeper the color. The associated color change is then colorimetrically analyzed according to the Beer-Lambert Law. This principle states that light is absorbed by a complementary color, and the emitted radiation is dependent upon concentration. For aluminum determination, a narrow band interference filter at 525 nm allows only green light to be emitted and passed through the sample cuvette. As the change in color of the reacted sample increases, absorbance of the specific wavelength of light also increases, while transmittance decreases.

This innovative optical system offers superior performance in accuracy, repeatability, and required time to perform a measurement. This compact, waterproof meter has a tutorial mode that walks the user graphically, step by step, to perform a measurement. The compact design fits comfortable in the hand for use in the field or on a table for benchtop use.

Features:

- Stable Light Source: The internal reference system of the HI97712 photometer compensates for any drifts due to power fluctuations or ambient temperature changes. With a stable source of light the readings are fast and stable between your blank (zero) measurement and sample measurement.
- Large Cuvette Size: The sample cell of the HI97712 fits a round, glass cuvette with a 25 mm path length. The relatively long path length of the sample cuvette allows the light to pass through more of the sample solution, ensuring accurate measurements even in low absorbance samples.
- High Efficiency Light Source: LED light sources offer superior performance compared to tungsten lamps. LEDs have a much higher luminous efficiency, providing more light while using less power. They also produce little heat, which could otherwise affect electronic stability.
- Intuitive Dot Matrix Display: The HI97712 is designed with a backlit, graphic LCD. With virtual keys, a battery status indicator, and error messages. Users will find the meter interface intuitive and easy to read. A dedicated help key provides information relating to the current meter operation, and can be used at any stage in the setup or measurement process to show contextual help.
- High Quality Filters: Improved optical filters ensure greater wavelength accuracy and allow a brighter, stronger signal to be received. The end result is higher measurement stability and less wavelength error.
- Auto-off Protection: The meter uses three common AA batteries that allow for about 800 measurements to be taken. The auto-off feature automatically shuts off the meter after 15 minutes of inactivity in order conserve battery life.
- Greater Light Yield:A focusing lens collects all of the light that exits the cuvette, eliminating errors from imperfections and scratches that may be present in the glass. The use of the convex lens reduces the need for indexing cuvettes.
- CAL Check Functionality: Hannas exclusive CAL Check feature allows for performance verification and calibration of the meter using NIST traceable standards. Our CAL Check standard vials are developed to simulate a specific absorbance value at each wavelength to verify the accuracy of subsequent readings.

Specifications

:

- Aluminum Range: 0.00 to 1.00 mg/L (as Al3+)
- Aluminum Resolution: 0.01 mg/L
- Aluminum Accuracy: +/- 0.04 mg/L +/- 4% of reading at 25 C
- Aluminum Method: adaptation of the Aluminon Method
- Photometer/Colorimeter Light Source: LED with 525 nm bandpass filter
- Photometer/Colorimeter Light Detector: silicon photocell
- Bandpass Filter Bandwidth: 8 nm
- Bandpass Filter Wavelength Accuracy: +/- 1.0 nm
- Cuvette Type: round 24.6 mm diameter (22 mm inside)
- GLP: yes
- Display: 128 x 64 pixel B/W LCD with backlight
- Logging Memory: 50 readings
- Battery Type/Life: 1.5 V AA Alkaline (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); 0 to 100% RH (IP67)
- Weight: 380 g (13.4 oz.)
- Dimensions: 142.5 x 102.5 x 50.5 mm (5.6 x 4.0 x 2.0")

Ordering information

The basic HI97712 meter is supplied with cuvettes (2), caps (2), plastic inserts for cuvettes (2), 1.5V AA batteries (3), instruction manual, and instrument quality certificate.