PFAS/GenX Analysis Report

To test whether and to what extent our Aqualine water filters remove PFAS, we had them tested by the laboratory at VU University Amsterdam.

We provided an Aqualine 5 for this purpose. The lab technician prepared a sample containing 6 nanograms per liter (ng/l). This was the concentration found in Papendrecht’s tap water at the time. This concentration is also found in some areas of the Netherlands (September 2026).

The sample was filtered through the Aqualine system. The filtered water was then analyzed. The analysis showed that no PFAS were detected, or that the PFAS concentration was below 0.1 ng/l, as this was the lowest value they could measure.

Explanation of the test results from the lab coordinator at Vrije Universiteit Amsterdam.

GenX* technology is used in the production of the nonstick coating found in some pans. During production, two substances are formed: FDR902 and 903. One is an ammonium salt and the other is an acid. When these substances come into contact with water, they break down into negatively and positively charged components (this also happens with salt: sodium and chloride). We are now concerned only with the negatively charged component; this is what causes the toxicological effect, and the analysis focuses on it. What is analyzed, therefore, is the sum of both forms. The results are reported as an acid because our reference standard is in the acid form, and the reported value for the acid is equal to the value of the negatively charged portion alone. GenX, PFOS, and PFOA fall under the category of Per- and Polyfluoroalkyl Substances (PFAS).