Temporary background values for PFAS in Dutch soil RIVM has derived temporary background values for two types of PFAS in Dutch soil: PFOS (perfluorooctane sulfonate) and PFOA (perfluoro octanoic acid).
If you have found a tick bite, check for others! One in five people who report having been bitten by a tick on Tekenrader.nl report that they have more than one tick bite. If you have found one tick bite, check for others!