Litmus papers kit to measure heavy metals presence

The kit is provided with 4 litmus papers. It measures the total amount of metals in the drinking water.

The presence of metals in the water are often caused by old pipes.

Lead presence can be found especially in historical city centers where the old pipes have not been replaced. The presence of iron or iron oxides is common with not stainless steel pipes.
Heavy metals presence is normally low, but a prolonged ingestion can be risky for the human health.