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HI96700 Low Range Ammonium Meter

Producer: HANNA Instruments

SKU: HANNA-HI96700 Category: Hanna experimental measuring equipment

Determine the concentration of ammonium from 0.00 to 3.00 mg/L (ppm)

The machine has a test and calibration feature with CAL Check standard solution.^™

Timer

Automatically shutdown

SALIENT FEATURES

CAL Check™ – Verify and calibrate the machine with NIST standards.

GLP – Review last calibration date

Automatically turns off – Automatically turns off after 10 minutes of non-use when the device is in measuring mode to save battery.

Show battery status – Displays the remaining battery power of the device.

Timer – Displays the time remaining before a measurement is taken. Ensures that all results are taken at appropriate reaction intervals when taking measurements.

Error message – On-screen messages warn of problems such as no cap, high zero, or standard too low.

Cooling light display – To maintain the desired wavelength used for absorption it is necessary to ensure the component does not overheat from the heat generated by the tungsten lamp. Each photometer is designed to allow minimum time for the components to cool. The cooling lamp indicator is displayed before taking the result.

Unit of measure – The appropriate unit of measurement is displayed with the result.

Importance

Ammonium is commonly found in natural surface waters and wastewater, resulting from the deamination of organic nitrogen compounds and the hydrolysis of urea. Ammonium is also present in water treatment processes using chloramines for disinfection, where ammonium is added to the water to react with chlorine. Ammonium is less common in groundwater due to adsorption to soil particles.

The HI96700 utilizes the Nessler D1426-92 method to measure ammonium concentrations below 3.00 mg/L (ppm). When Nessler reagent is added to samples containing ammonium, the sample will turn a yellow 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 low range determination of ammonium, a narrow band interference filter at 420 nm (violet) allows only violet 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 particular wavelength of light also increases, while transmittance decreases.

A complete HI9670 kit0C includes:

– Portable optical meter

– 2 sample cuvettes with caps

– CAL Check™ standard cuvettes and certification

– Cuvette cleaning cloth

– Suitcase for carrying the machine

* Reagents purchased separately

SPECIFICATIONS

The scale	0.00 to 3.00 mg/L (ppm) (ammonia-nitrogen)
Resolution	0.01 mg/L (ppm)
Accuracy	±0.04 mg/L ±4% value @ 25°C (77°F)
Light source	Tungsten lamp
Light source	silicon photovoltaic cell @ 420 nm
Method	Nessler D1426-92
Auto Shutdown	after 10 minutes in measurement mode; after 1 hour in standard mode since last measurement
Environment	0 to 50°C (32 to 122°F); RH max 95% does not condense
The battery	9V
Size	193 x 104 x 69 mm
Mass	360g
Guarantee	12 months
Supply includes	HI96700 is supplied with 2 cuvettes with caps, 9V battery, quality certificate and instructions. CAL Check Reagents and Standards^TM sold separately.