Certificate of Analysis

Every batch of Yavelle 25ppm Deuterium-Depleted Water is independently verified by an accredited isotope laboratory. We publish the certificate so you can see the deuterium concentration for yourself, because with deuterium-depleted water, the number is the whole point.

Independently tested at 20 ppm, exceeding our 25 ppm specification.

Latest Certificate of Analysis

Yavelle 25ppm deuterium-depleted water certificate of analysis from Isotech Laboratories, lab number 1004783, reported 23 March 2026, showing a measured result of delta-D minus 871.7 per mille relative to VSMOW, equal to 20 ppm deuterium

What the Result Means

Deuterium concentration is measured against an international reference standard called VSMOW (Vienna Standard Mean Ocean Water), which represents ordinary ocean water at about 155.76 ppm of deuterium. Our sample returned a δD value of −871.7‰ relative to VSMOW, which corresponds to roughly 20 parts per million of deuterium, comfortably below our labelled 25 ppm specification.

In plain terms: ordinary drinking water sits at around 150 ppm of deuterium. This batch was independently confirmed at 20 ppm, even more depleted than the 25 ppm we promise on the label.

Certificates are issued per batch, and the certificate shown reflects the batch noted above. This information is provided for product transparency and does not constitute a medical claim. Yavelle deuterium-depleted water is not intended to diagnose, treat, cure or prevent any disease.