Quality controls

Besides the nutriments and essential elements, the analysis of the principal toxic substances must appear (mercury, arsenic, lead, cadmium, aluminium , benzine and DDT), and also information about organic pollutants (coliform bacteria).  If the quality analysis of toxic substances shows no organic impurity, this can never in any case be a proof of quality.  A minimal concentration of heavy metals proves that chlorella is able to irreversibly attach toxic substances.

The colour of chlorella

Chlorella products of good quality are uniformly dark green. Through its high concentration of chlorophyll, chlorella is very sensitive to light, so its colour fades very rapidly if it stays lengthily exposed to light. A light green colour indicates that the product is old and that its natural properties will not act so effectively, but, in principal, it does not become harmful.

Nevertheless, it must not have spots or be speckled, otherwise the purity of the product is no longer guaranteed. Therefore, do not buy such altered products. If the colour becomes bluish, it may be a mixture with blue-green bacteria. If, on the package, chlorella pyrenoidosa is indicated as the sole component, it is also advisable to be wary of it.

Chlorella’s smell

All chlorella products have a strong smell, similar to the smell of hay or of lettuce.  It goes without saying that chlorella tablets smell more intensely  than the capsules.  The lack of odour indicates that the chlorella is too old.  A bad or pungent smell is a sign of blue-green bacteria.  In these cases, for security, consuming is unadvisable.