Hanna HI97750 Potassium Low and Medium-Range Photometer

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  • Range: 0.0 to 100 mg/L
  • Battery life: Over 800 measurements
  • Cuvette type: 24.6 mm diameter
  • Case protection rating: IP67

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Description

Hanna HI97750: Unlocking Water’s Hidden Potential

The Hanna HI97750 Potassium Photometer is a cutting-edge instrument meticulously engineered to provide accurate and repeatable measurements of potassium content in water. As an advanced portable device, it embodies Hanna Instruments’ decades of expertise in analytical instrumentation. The meter’s design focuses on delivering a seamless user experience while ensuring uncompromising precision, making it an indispensable tool for both laboratory professionals and field technicians. Its superior optical system, featuring a Light Emitting Diode (LED) and a narrow band interference filter, is sealed from external dust, dirt, and water, guaranteeing long-term reliability and stability. This photometer is built with a rugged, waterproof IP67-rated case that not only withstands the rigors of real-life use but also floats, providing peace of mind in any environment. The exclusive positive-locking system ensures cuvettes are always placed in the correct position for consistently accurate readings, eliminating a common source of error.

The Hanna HI97750 is an auto-diagnostic portable photometer. Its advanced optical system uses a Light Emitting Diode (LED) and a narrow band interference filter 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. The CAL Check™ functionality enables users to validate the instrument’s performance at any time and apply a user calibration if needed. 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. The HI97750 measures potassium content in water samples in the 0.0 to 100 mg/L (ppm) range. The method is an adaptation of the Turbidimetric Tetraphenylborate Method. The HI97750 photometer is a compact and versatile meter suitable for field or bench measurements. It features a sophisticated optical system, meter validation using certified CAL Check cuvettes, tutorial mode, auto-logging, a waterproof IP67 floating case, and GLP features.

A Revolutionary Approach to Accurate Analysis

The HI97750 redefines convenience with its intuitive design and user-centric features. The meter’s backlit LCD display provides at-a-glance readings from any angle, day or night, ensuring visibility in all lighting conditions. For new users, the built-in tutorial mode is a game-changer, guiding them step-by-step through the measurement process, including sample preparation and reagent quantities. This feature removes the guesswork and a learning curve, ensuring accurate results from the very first use. The auto-logging capability is another significant benefit, as it automatically saves the last 50 measurements, allowing users to recall and review data easily. The meter’s thoughtful design also includes an auto-off feature that conserves battery life, automatically shutting down after 15 minutes of inactivity to prevent accidental power drainage. A low battery warning symbol blinks when the power drops below 10%, and the meter will shut down to prevent erroneous readings caused by low battery level. These smart features collectively simplify the testing process, allowing users to focus on their work without worrying about instrument operation.

Precision Engineered for Unmatched Performance

At the heart of the HI97750 lies a meticulously crafted optical system designed for superior accuracy and reliability. The use of a Light Emitting Diode (LED) as a light source offers several advantages over traditional tungsten lamps. LEDs are not only more energy-efficient, using less power to produce more light, but they also generate very little heat, which helps maintain the instrument’s electronic stability. The HI97750’s optical system also incorporates an internal reference detector that automatically compensates for any light drifts caused by power fluctuations or changes in ambient temperature. This ensures a stable light source for both the zero (blank) and sample measurements, leading to highly consistent and repeatable results. Furthermore, improved optical filters ensure greater wavelength accuracy, resulting in a brighter, stronger signal and higher measurement stability. A focusing lens collects all light exiting the cuvette, which eliminates errors from cuvette imperfections and scratches, removing the need for cuvette indexing.

Ensuring Flawless Results Through Validation

Maintaining the integrity of measurements is paramount, and the HI97750 addresses this with its exclusive CAL Check™ validation feature. This stress-free, straightforward system provides a simple way to verify that the photometer is working correctly. By simply inserting a certified CAL Check standard, the meter guides the user through a validation process. The display will show “PASSED” if the measured value is within the accuracy specifications, indicating that no user calibration is required. This feature provides an added layer of confidence in the accuracy of the readings. The meter’s GLP (Good Laboratory Practice) features also allow users to view the date and time of the last user or factory calibration, providing a clear record for quality assurance purposes. This commitment to validation ensures that the HI97750 consistently delivers reliable and trustworthy results for critical applications.

Built to Withstand the Toughest Conditions

The HI97750 is not just a high-tech instrument; it is a rugged and durable piece of equipment designed for real-world applications. Its new IP67-rated body is designed to withstand drops, knocks, and spills, making it suitable for even the most demanding environments. The internal optics are completely sealed from outside dust, dirt, and water, protecting the sensitive components and ensuring top performance in any condition. The fact that it floats is a particularly useful feature for field measurements near water sources, providing a crucial safety net against accidental drops. The device is built to be comfortable to hold for on-the-go testing or to sit stably on a table for benchtop use. The included AA batteries provide power for over 800 measurements, ensuring that the photometer is ready for extensive field use without frequent battery changes.

A Versatile Tool for Diverse Applications

The HI97750 is a versatile instrument with a wide range of applications, primarily focused on measuring potassium content in water samples. Potassium is an essential nutrient for plant growth, making this photometer an invaluable tool in agriculture and hydroponics to monitor nutrient levels in irrigation water and nutrient solutions. In environmental science, it is used to assess water quality in rivers, lakes, and drinking water sources. Municipal water treatment facilities can use the HI97750 to monitor potassium levels in tap water. The dual-range capability, covering both low and medium ranges, makes it adaptable to various testing needs. Specific applications include measuring potassium in drinking water, wastewater, and nutrient solutions. The photometer’s accuracy and ease of use make it a go-to instrument for routine testing and critical analysis across multiple industries where precise potassium measurement is essential.

Uncompromising Service and Global Accessibility

In addition to its advanced features, the HI97750 is backed by a commitment to customer support and accessibility. The tpt24 online store is the world’s leading online store for this product, delivering it with guaranteed authenticity and quality to you in any country you are in. The photometer comes with a two-year warranty against defects in workmanship and materials, further demonstrating Hanna Instruments’ confidence in the product’s quality. Users can also contact the company’s technical support for assistance, ensuring that help is always available if needed. The instrument is supplied with all the necessary accessories for successful measurements, including sample cuvettes, caps, plastic stoppers, and batteries, providing a complete package right out of the box.

The Science Behind Our Accurate Readings

The HI97750’s accurate readings are a result of its sophisticated photometric analysis principle, which is based on the Lambert-Beer Law. This law states that the amount of light absorbed by a substance is directly proportional to its concentration. The meter works by shining a light beam through a prepared sample and measuring the light absorbed by the chemical reaction. The specific chemical reactions produce a light-absorbing compound whose concentration can then be accurately calculated. This scientific principle, combined with the meter’s advanced optical system, ensures that every reading is not only precise but also highly accurate. The instrument’s ability to display results in different chemical forms, such as mg/L of potassium (K) or mg/L of potassium oxide (K₂O), provides flexibility for various reporting needs.

Specifications

Feature Specification
Range (Potassium LR) 0.0 to 20.0 mg/L (as K)

Range (Potassium MR) 10 to 100 mg/L (as K)

Resolution 0.1 mg/L

Accuracy (Potassium LR) ±3 mg/L ±7% of reading at 25°C

Accuracy (Potassium MR) ±10 mg/L ±7% of reading at 25°C

Method Adaptation of the Turbidimetric Tetraphenylborate Method

Light Source Light Emitting Diode (LED)

Wavelength 466 nm Bandpass filter

Bandwidth 8 nm

Wavelength Accuracy ±1.0 nm

Light Detector Silicon photocell

Cuvette Type Round 24.6 mm diameter (22 mm inside)

Auto-logging 50 readings

Display 128×64 pixel B/W LCD with backlight

Auto-off After 15 minutes of inactivity (30 minutes before a READ measurement)

Battery Type 1.5 V AA Alkaline (3 pcs.)

Battery Life > 800 measurements (without backlight)

Environment 0 to 50°C (32 to 122°F); 0 to 100% RH, non-serviceable

Dimensions 142.5 × 102.5 × 50.5 mm

Weight 380 g (with batteries)

Case Ingress Protection IP67, floating case

Data Sheet

Download Data Sheet Of Hanna HI97750 Potassium Low and Medium-Range Photometer