AK45 - pocket photometer for measuring nitrites in water

The AK45 tester enables simple measurement of nitrites in water within the 0–150 ppm range.

The AK45 nitrite meter is designed to determine nitrite concentrations in water samples using a colorimetric method based on iron(II) sulfate. This enables reliable analysis in both field and laboratory settings, supporting routine water quality monitoring. Consequently, the device is used in environmental protection, industry, and aquaculture, meeting the requirements of standardized analytical and operational procedures for process control and wastewater assessment.

Technical specifications of the AK45 tester

Measurement range: 0 to 150 ppm, making the device suitable for monitoring nitrite levels in various water matrices. It thus meets the requirements of water treatment plants, wastewater treatment facilities, and industrial processes.
Resolution: 1 ppm, allowing for direct reading of nitrite concentration. This ensures clear presentation of results for technical monitoring purposes.
Accuracy: ± 3 ppm + 5% of the reading (depending on the method used), consistent with the operational limits of the colorimetric test.
Adjustment: 4 points (0, 50, 100, and 150 ppm), enabling calibration against standards and ensuring the consistency of subsequent measurements.
Sample temperature: 15 to 35 °C (in accordance with recommended analysis conditions).
Sample volume: 10 ml (in accordance with the method used).
Light source: Light-emitting diode (LED), ensuring optical signal stability.
Wavelength: 575 nm (suitable for the colorimetric method of nitrite determination).
Measurement chamber: Glass cuvette, ensuring compliance with laboratory procedures and reading repeatability.
Automatic shut-off: After 2 minutes (energy saving).
Display: OLED, ensuring good visibility of measured values.
Available languages: Portuguese, English, Spanish, and Italian, enabling use in various operational settings.
Operating temperature: 0 to 50 °C (suitable for field use). Operating humidity: 10 to 90% RH (non-condensing), ensuring stable operation.
Power supply: 9 V battery (9 V DC), suitable for portable use.
Dimensions: W 73 × H 77 × D 40 mm (easy to transport and handle).
Weight: 120 g (including battery), ensuring device portability. Measurement method: adaptation of the colorimetric method using iron(II) sulfate, ensuring analytical standardization.