CALDUR® Sulfate 20 mg – Titrimetric

CALDUR® Sulfate 20 mg test set – Titrimetric

What is sulfate measured for?

Sulphate (SO₄²-) is a naturally occurring anion in many bodies of water and mainly comes from the weathering of sulphate-containing minerals such as gypsum (CaSO₄) and anhydrite. In industrial processes, sulphate also enters the water through wastewater, cooling towers and chemical production processes.

The limit value for sulphate in drinking water is 250 mg/l (Drinking Water Ordinance). Elevated sulphate concentrations can have a deleterious effect and impair the taste of the water. Sulphate monitoring is particularly important in industry, as high concentrations can lead to corrosion of concrete structures and pipelines.

This test kit with a resolution of 20 mg/l SO₄²- per drop is optimized for higher concentrations and enables rapid determination in samples with elevated sulfate content.

How does the test set work?

The CALDUR® Sulfate 20 mg test kit works according to the principle of precipitation titration. A reagent is first added to the water sample. The titration solution is then added drop by drop until a color change indicates the end point.

Measuring principle: Barium ions from the titration solution react with sulphate ions and form poorly soluble barium sulphate. The end point is indicated by a Reagent. Each drop corresponds to 20 mg/l SO₄²-.

Calculation: Number of drops × 20 = sulphate concentration in mg/l.

Advantages of the CALDUR® test set

• Quick analysis in just 2 minutes

  Efficient on-site determination without laboratory equipment

• Measured value 20 mg/l SO₄²- per drop

  Larger measuring range for higher concentrations

• 30 provisions per set

  Economical for regular monitoring

• Proven precipitation titration

  Reliable and reproducible results

• Faster titration at high concentrations

  Fewer drops required than with the 10 mg test set