Product Overview

• HI96722 is no longer available.

• Below is a link to a new meter that has been upgraded with many advanced features, including an improved optical system, a dot-matrix LCD that provides a graphical tutorial mode to help users complete the measurement process, and is waterproof, including the cuvette assembly.

• Both meters use the same reagents.

• The HI96722 portable photometer is used to measure cyanuric acid. Hanna's portable photometers use an advanced optical system; the combination of a special tungsten lamp, a narrow-band interference filter, and a silicon photodetector ensures accurate photometric readings every time. Hanna's exclusive CAL Check™ feature uses ready-made NIST-traceable standards to verify meter verification and calibration. The dedicated cuvette locking system ensures that the cuvette is inserted into the measurement cell in the same position every time to maintain a consistent path length.

• Features at a glance

• CAL Check™ - allows performance verification and calibration of the meter using CAL Check NIST-traceable secondary standards.

• GLP - records the date the last user calibration was performed.

• Built-in timer - allows the use of a timer to ensure the chemical reaction uses the appropriate 3 minute 30 second reaction time. When the timer countdown ends, the meter will automatically take a reading. This feature ensures consistency between multiple users.

• Indexing notch on the meter - the meter has a notch that allows a lock and key to engage with the cuvette cap. This ensures that the cuvette is consistently indexed (in the same position) so that the same path length is maintained for accurate results.

• Cooling lamp indicator - in order to maintain narrow-band light, it is necessary to keep the temperature of the optical components consistent. This photometer has a cooling lamp indicator that is displayed for a short period before each measurement so that the components can cool and the highest possible accuracy can be achieved.

• Error messages - displayed messages warn of problems, including no cap, over-range and under-range readings, and light source errors.

• Auto shut-off - when the meter is in measurement mode, it automatically shuts off after 10 minutes of non-use. Prevents wasting battery if the meter is accidentally left on.

• Battery status indicator

• The instrument has a battery level indicator to show the remaining battery life, as follows:

• 3 bars, 100% capacity

• 2 bars, 66% capacity

• 1 bar, 33% capacity

• When the battery level is below 10%, the battery icon will flash.

• Measurement unit - the appropriate measurement unit is displayed together with the reading.

• Cyanuric acid (CYA) is a chlorine stabilizer. It is widely used in swimming pool and spa treatment programs to slow down the decomposition of hypochlorous acid. In outdoor swimming pool areas, the effect of ultraviolet light accelerates this process. If used properly, it can save 80% of a pool's normal chlorine consumption during peak periods. Cyanuric acid is also used in chlorinated beaches, selective herbicides, and brightening agents.

• The HI96722 uses the turbidimetric method to measure cyanuric acid concentrations in the range of 0 to 80 mg/L (ppm). When added to a sample containing cyanuric acid, the reagent reacts to form a white suspension; the greater the cyanuric acid concentration, the deeper the color. The associated color change is then analyzed colorimetrically according to the Beer-Lambert law. This principle states that light is absorbed by the complementary color, and the emitted radiation depends on the concentration. For cyanuric acid, a narrow-band interference filter at 525 nm (green) allows only green light to be detected by the silicon photodetector. As the color change of the reacted sample increases, the absorbance of light at a specific wavelength also increases, while transmittance decreases.

• CAL Check™ standards with certificate

• HI96722-11 CAL Check™ standards are used for calibration and performance verification of photometers with the CAL Check™ feature.

• Certificate of analysis provided

• Lot number

• Expiration date

• Standard value at 25°C

• NIST-traceable reference meter

• Storage container provided

• Lightproof

• Protects against accidental breakage