Aluminum (Al) enters drinking water primarily through aluminum-based flocculants (e.g., aluminum sulfate, polyaluminum chloride). These agents are used in water treatment to remove suspended solids. The limit for aluminum in drinking water is 0.2 mg/l Al (Drinking Water Ordinance). Elevated aluminum concentrations can lead to turbidity and indicate insufficient flocculation or filtration. In acidic waters (pH < 5), naturally occurring aluminum can leach from the soil and reach concentrations toxic to fish. Regular monitoring of aluminium concentration is particularly important in water treatment plants, industrial processing and environmental analysis.
How does the test kit work?
The CALDUR® Aluminum Test Set – Colorimetric is based on a colorimetric color chart method. After adding three reagents to the water sample, a characteristic color develops within 8 minutes, the intensity of which is proportional to the aluminum concentration. The measured value is determined by direct color comparison with a supplied color chart.
Advantages of the CALDUR® test set
Sensitive measuring range 0.05 – 2 mg/l AlCovers the drinking water limit and beyond.
150 provisions per setCost-effective for continuous use in waterworks
Easy to use with color chartRapid on-site determination without measuring equipment
Proven colorimetric methodReliable and reproducible results
Robust plastic housing with hinged lidSafe transport and protection of the reagents