Nitrate - Nitrogen Portable Photometer

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Update Terakhir
01 / 12 / 2019
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1
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83 Kali

Harga
Rp. 999

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Spesifikasi Nitrate - Nitrogen Portable Photometer

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The HI96728 Nitrate-Nitrogen Portable Photometer combines accuracy and ease of use in an ergonomic, portable design. A user can accurately determine the concentration of nitrate as nitrogen in samples within a 0.0 to 30.0 mg/L (ppm) range using the HI93728-0 ready made reagents. The HI96728 offers many advanced features including the exclusive CAL Check™ function used for performance verification and calibration of the meter.


CAL Check™ Validation and Calibration
Built-in Timer
Automatic Shut Off


 


 



Details


The HI96728 portable photometer is for the measurement of nitrate as nitrogen. Hanna's portable photometers feature an advanced optical system; the combination of a special tungsten lamp, a narrow band interference filter, and silicon photodetector ensure accurate photometric readings every time. The Hanna exclusive CAL Check™ feature utilizes ready-made, NIST traceable standards to verify both meter validation and calibration. The exclusive 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 for performance verification and calibration of the meter using a CAL Check NIST traceable secondary standard.
GLP - Records the date of the last user calibration performed.
Built in timer - Ensures the appropriate reaction time is used for the chemical reaction. At the end of the timer the meter will automatically take the reading. This feature ensures consistency across multiple users.
Indexing indent on meter - The meter has an indent that allows for a lock and key fit with the cuvette cap. This ensures that the cuvette is indexed consistently (same position) in order to maintain the same path length for accurate results.
Cooling Lamp Indicator - It is necessary to maintain a consistent temperature of the optical components in order to maintain a narrow wavelength band of light. This photometer has a cooling lamp indicator that is displayed for a short period of time before each measurement in order to allow the components to cool and obtain the highest accuracy possible.
Error messages - Messages on display alerting to problems including no cap, over range and under range readings, and light source error.
Auto-shut off - Automatic shut off after 10 minutes of non-use when the meter is in measurement mode. Prevents wastage of batteries in the event the meter is accidentally not turned off.
Battery status indicator
The instrument has a battery level indicator to display reaming life as follows:
• 3 lines for 100 % capacity
• 2 lines for 66 % capacity
• 1 line for 33 % capacity
• Battery icon blinks when the capacity is less than 10 %.
Units of measure - Appropriate unit of measure is displayed along with reading.
 
***NOTE: Chloride above 100 mg/L will cause a negative interference with the nitrate chemistry. We do not recommend the HI96728 for measuring nitrate in saltwater.


photometer optical system

 
Nitrogen is abundant in the Earth’s atmosphere and is present in water in the form of nitrate, nitrite, and ammonia. Plants use nitrogen as a nutrient to build proteins by tracking it in through their root system. Nitrate is formed in water mainly through rainfall, decomposition of organic matter, and runoff from manmade pollutants such as sewage waste and fertilizers. Almost all surface waters have a measurable level of nitrate, and a moderate amount is considered beneficial. Large amounts of nitrate, however, can lead to eutrophication which may result in decreased levels of dissolved oxygen in the water.
The HI96728 uses an adaptation of the cadmium reduction method to measure nitrate concentrations of less than 30.0 mg/L (ppm) as nitrogen. When the reagent is added to samples containing nitrate, the sample will turn an amber 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 nitrate-nitrogen determination, a narrow band interference filter at 525 nm (green) allows only green light to be detected by the silicon photodetector and omits all other visible light emitted from the tungsten lamp. As the change in color of the reacted sample increases, absorbance of the specific wavelength of light also increases, while transmittance decreases.






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PT. Hanna Instruments Indotama

PT. Hanna Instruments Indotama merupakan agen tunggal resmi produk Hanna Instruments di Indonesia sejak tahun 1996.

Hanna Instruments merajai industri instrumentasi di dunia karena alat ukur yang mudah digunakan dengan harga yang sangat terjakau.

Hanna Instruments diproduksi di Rumania, Italia dan UNITED STATES of America (USA).
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