Czym jest
Cobalt is a trace element, part of vitamin B12 and needed by legumes in very small amounts. It is measured in the hydroponics package because the margin between enough and too much for plants is narrow.
Skąd się bierze
Cobalt dissolves from natural minerals and is raised locally by mining, metal working and some fertilisers. Levels in UK water are normally very low.
Dlaczego ma znaczenie
There is no UK drinking-water limit for cobalt, and at natural levels it is not a health concern. For plants, excess cobalt is toxic, so a raised result matters to a grower even though it would not to a householder.
Co można z tym zrobić
If a grower needs a lower baseline, reverse osmosis removes cobalt along with other dissolved metals, and the feed is then built up from a known starting point.
Informacje ostatnio zweryfikowane 5 października 2026 przez Pozzani Pure Water.