What is the primary function of a Nitrate-Nitrogen Photometer?

Its primary function is to accurately measure the concentration of nitrate-nitrogen in liquid samples, which is crucial for environmental monitoring and water quality control.

Why is nitrate-nitrogen measurement important?

Measuring nitrate-nitrogen is important because high levels can indicate contamination from fertilisers or organic decomposition, posing potential health risks if converted to nitrites, particularly in drinking water.

Can this unit measure total nitrates?

This unit measures nitrate-nitrogen (NO₃-N). To convert this reading to total nitrate concentration (NO₃), a multiplication factor is typically applied, as nitrate-nitrogen is a component of total nitrates.

What reagents are required for operation?

Photometers of this type typically require specific chemical reagents to facilitate the colourimetric reaction necessary for nitrate detection. These are usually purchased separately.

Is this photometer suitable for field use?

Yes, handheld photometers like this are specifically designed for field measurements due to their portability, battery operation, and robust construction.

used Equipment

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Hanna - HI 93728 Nitrate-Nitrogen Photometer

Name: HI 93728 Nitrate-Nitrogen Photometer
Brand: Hanna
SKU: 413032
Price: 45 GBP
Availability: InStock

Price: £ 45

This listing is for a Hanna HI 93728 Nitrate-Nitrogen Photometer.

The unit is in full working condition and is ready for immediate release.

Overview of Nitrates and Measurement Importance

Nitrates are naturally occurring compounds produced from the decomposition of organic matter or from fertilizers. However, they can be converted to nitrites, which pose health risks.

Guidelines for Nitrate Levels:

Global Maximum: 45 mg/L for nitrates in water.

Europe: 50 mg/L for potable water.

USA (EPA): 10 mg/L for nitrate nitrogen (NO₃-N), which equates to 45 mg/L of nitrates.

HANNA® HI 93728 and HI 93828 Meters

These handheld meters are designed for field measurements of nitrate levels with ease and accuracy.

Key Features:

HI 93728 Meter:

Measures nitrogen nitrate from 0 to 30 mg/L (NO₃-N).

To convert to nitrate concentration, multiply the reading by 4.43, allowing a maximum reading of up to 133 mg/L of nitrate (NO₃).

Measurement Range:

0.0 to 30.0 mg/L (NO₃-N)

Resolution:

0.1 mg/L

Accuracy:

±0.5 mg/L ±10% of reading

Light Source:

LED at 555 nm

Light Detection:

Silicon Photocell

Battery Type/Life:

1 x 9V with approximately 40 hours of continuous use.

Operating Environment:

0 to 50°C (32 to 122°F); RH max 95% non-condensing

Dimensions:

180 x 83 x 46 mm (7.1 x 3.3 x 1.8 inches)

Weight:

290 g (10 oz.)

Method:

Adaptation of the cadmium reaction method, producing an amber tint in the sample upon reaction with nitrate-nitrogen.

Cambridgeshire, United Kingdom

5,791 km away

Model Number

HI 93728

Stock Number

413032

Machinery Masters View

Typical context for this category of equipment. Always confirm specifics with the seller.

Applications & Use Cases

Water treatment facilities for monitoring nitrate levels in potable and wastewater.
Agricultural settings for assessing nitrate content in soil extracts and irrigation water.
Environmental laboratories for analysing natural water sources like rivers, lakes, and groundwater.
Food and beverage industry for quality control of certain products and process water.
Aquaculture operations to maintain optimal water quality for aquatic life.

Typical Specifications

Measurement Range (NO₃-N): Typically 0.0 to 30.0 mg/L for this class of handheld photometer.
Resolution: Commonly 0.1 mg/L for units of this type.
Accuracy: For this class of equipment, accuracy is typically around ±0.5 mg/L ±10% of reading.
Light Source: Often an LED at a specific wavelength, such as 555 nm.
Power Supply: Typically operates on a 9V battery, offering portable use.
Operating Environment: Designed for use in temperatures typically ranging from 0 to 50°C with non-condensing humidity.
Method: Commonly employs an adaptation of the cadmium reduction method.

Frequently Asked Questions

Its primary function is to accurately measure the concentration of nitrate-nitrogen in liquid samples, which is crucial for environmental monitoring and water quality control.

Machinery Masters Intelligence. General guidance for this category of equipment only, not a substitute for the seller's exact specifications. Always confirm details with the seller.