The ammonia meter is designed to determine ammonia (NH₃) content in water samples using a colorimetric method based on the Nessler method. The device enables reliable analysis in both field and laboratory settings, ensuring operational stability and metrological traceability for routine water quality monitoring.

Technical specifications of the AK43 tester

• Measurement range: 0.00 to 5.00 ppm, making the device suitable for monitoring drinking water, natural waters, and industrial wastewater. The equipment thus covers the ranges typically required for environmental and industrial applications.
• Resolution: 0.01 ppm, enabling precise reading of the ammonia concentration in the sample. This allows the instrument to provide objective results for routine analytical checks.
• Accuracy: ± (0.10 ppm + 5% of the reading), in accordance with the specifications of the adopted analytical method. The analyzer thus complies with the operational limitations of the colorimetric test.
• Four-point calibration: 0, 1, 3, and 5 ppm, allowing for calibration against specific standards. This ensures the consistency of subsequent measurements.
• Sample temperature: 15 to 35 °C, falling within the recommended conditions for performing the analysis.
• Measurement method: based on the Nessler method, ensuring analytical standardization.
• Light source: light-emitting diode (LED), contributing to optical signal stability.
• Wavelength: 470 nm, suitable for the measurement method employed.
• Measurement chamber: glass cuvette, ensuring compliance with laboratory procedures. The optical system thus guarantees reading repeatability.
• Operating temperature: 0 to 50 °C, enabling use in various field conditions.
• Operating humidity: 10 to 90% RH (non-condensing), ensuring stable operation. The device is therefore suitable for routine, continuous monitoring.
• Sample volume: 10 ml, in accordance with the method used.
• Display: OLED, ensuring good visibility of measured values.
• Automatic switch-off: after 2 minutes, promoting energy efficiency.
• Languages: Portuguese, English, Spanish, and Italian, enabling operation in various settings. Power supply: 9 V DC (one 9 V battery).
• Dimensions: 73 × 77 × 40 mm, facilitating transport and handling.
• Weight: 120 g (including battery), ensuring device portability.

Kit contents

• 2 glass cuvettes with lids – AK4551, compatible with the measurement method
• 1 cloth for cleaning and drying cuvettes, ensuring optical properties are maintained
• 1 carrying case, providing protection during transport