Hanna HI 93728 Nitrate-Nitrogen Photometer

• 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.

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.

• 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?

• Can this unit measure total nitrates?

• What reagents are required for operation?

• Is this photometer suitable for field use?

Spectrophotometers remain valued across research, QA and diagnostics for their precision and reliability. Buyers typically prioritise wavelength range, optical bench condition and calibration history when purchasing used units. These instruments generally perform consistently when properly maintained. Common strengths include straightforward operation, durability of core optical components, and wide availability of compatible software. Prospective buyers should verify calibration certificates and request functional testing data before purchase.

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