Frequently Asked Questions

Below is a list of our most frequently asked questions. If your question isn’t listed, feel free to contact us.

Our analysts have tested this together with the health authorities of the Magnesium Health Institute. Their conclusion is set out below: 

We do not recommend using flakes as a base for making highly concentrated “magnesium oil” of more than 5%. The flakes are produced by a process with an evaporation step. The Brine from the source is heated to approximately 160 degrees Celsius, during which process the water is evaporated until a concentration of 47% magnesium chloride is reached. This concentration is equivalent to the ratio of magnesium chloride to water as Magnesium Chloride Hexahydrate [MgCl2.6 (H2O)], which is a natural stable form as it cools and crystallises on the cooling belt. Due to the heating and evaporation, a small amount of MgCl2 will decompose into MgOHCl (magnesium hydroxide chloride), MgCO3 (magnesium carbonate) and some HCl (hydrochloric acid) in the vapour stream. These products are also responsible for the white haze that becomes visible after dissolving the flakes. These products are not immediately dangerous, but are unavoidable during the production of the flakes.

The flakes are perfect for applications up to 5%, such as (foot) bath applications. For topical applications with higher concentrations, we recommend the pure natural magnesium oil (brine) directly from the source, without any processing steps. This magnesium oil has been specially selected for this application and is guaranteed by the Zechstein Inside batch protocol.

The Zechstein source is unique in terms of quality and purity. As Zechstein Minerals, we developed a selection procedure with Nedmag (shareholder), who is the operator of the source. Nedmag extracts the magnesium chloride brine from various sources. The selection procedure is called the Zechstein Inside® batch protocol (ZI protocol) and has several stages before a guaranteed and certified batch can be produced. 

Based on the batch protocol, Zechstein Minerals checks production on a daily basis, based on analyses. Zechstein Minerals’ ZI protocol is based on Nedmag’s GMP procedures.

If the daily analyses fall within the requirements of the Zechstein Inside® quality, the ZI batch can be scheduled. This production is then run under the quality responsibility of Zechstein Minerals and stored separately. Samples for detailed analysis are taken from the batch produced.

An element scan on the ICP forms the basis of the analysis report. If this analysis meets the conditions of the Zechstein Inside quality, the batch will receive its Certificate of Origin (CoO) and the Zechstein Inside ® quality label.

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