Frequently asked questions

Stable isotopes are non-radioactive atoms of the same chemical element, which differ only in their number of neutrons. Therefore, they have nearly identical chemical behavior, but different physical properties. The nuclei with an odd number of protons and neutrons have a magnetic moment, which can be exploited by magnetic resonance technology.

Our H2O-18 has a shelf life of 3 years after production and we always guarantee a shelf life of one year after delivery.

Internal measurements of O-17 and/or O-18 showed that our products, if vials are tightly closed and stored at constant temperatures between 5-15°C, can still fulfill the standard specification after 10 years.

Therefore, you can be rest assured, that you can use our water, within the official shelf life of 3 years (after production), without hesitation.

Store product tightly closed in a refrigerator, but temperature must not fall below 5 °C (danger of product freezing).

Recommended temperature for long time storage is between 5-15°C, however, continuous temperature fluctuations should be avoided.

In order to provide our customers with the latest version of the safety data sheets, we would like to ask you to contact us directly ( We will then immediately send you the latest data sheet for your product.