The AK42 colorimeter is designed to determine the apparent color of water using the platinum-cobalt colorimetric method. It enables reliable analysis—either in the field or in the laboratory—in accordance with the ISO 7887:2011 standard, ensuring operational stability and measurement consistency within standardized analytical procedures.

Technical specifications of the AK42 tester

• Measurement range: 0 to 500 PCU, enabling the monitoring of raw water, treated water, and wastewater. This allows the colorimeter to cover the ranges required for environmental and industrial applications.
• Resolution: 1 PCU, allowing for the direct reading of the sample's apparent color. Consequently, the colorimeter delivers objective results consistent with standardized visual assessment.
• Accuracy: ± (10 PCU + 5% of the reading), in accordance with the colorimetric method specifications. This parameter ensures compliance with the operational limits of the PCU test.
• Adjustment: 4 points (0, 100, 300, and 500 PCU), enabling calibration against established standards. This guarantees the consistency of subsequent measurements.
• Sample temperature: 15 to 35°C, falling within recommended analysis conditions.
• Measurement method: Platinum-Cobalt, compliant with ISO 7887:2011, ensuring analytical standardization.
• Light source: Light-emitting diode (LED), ensuring optical signal stability.
• Wavelength: 455 nm, making the device suitable for the PCU method.
• Measurement chamber: Glass cuvette, ensuring compliance with laboratory standards and the repeatability of optical readings.
• Operating temperature: 0 to 50°C, enabling use in various field conditions.
• Operating humidity: 10 to 90% relative humidity (non-condensing), ensuring stable operation and enabling continuous monitoring. Sample volume: 12 ml, ensuring compatibility with the included cuvettes.
• Display: OLED, ensuring good visibility of measured values.
• Automatic shut-off: after 2 minutes, helping to save energy.
• Languages: Portuguese, English, Spanish, and Italian, enabling use in various linguistic settings.
• Power supply: 9 V DC (one 9 V battery).
• Dimensions: 73 x 77 x 40 mm, facilitating transport and handling.
• Weight: 120 g (including battery), ensuring device portability.

Kit contents

• 1 cloth for cleaning and drying cuvettes, helping to maintain optical properties.
• 1 carrying case, providing protection during transport.
• 2 glass cuvettes with lids (Ø 18.8 mm x 68 mm), compatible with the measurement method.