SiLibeads Filterbeads get certified according to NSF regulations
SiLibeads Glassbeads produced by Sigmund Lindner GmbH passed all the tests from the NSF – National Science Foundation
The National Science Foundation (NSF) is an independent federal agency that proofs products according to safety deficiencies and harmful aspects. SiLibeads Glassbeads passed all the tests and got certified. The NSF-Certificate is an other indication for SiLibeads Filterbeads beeing the right choice for swimmingpools, ponds, water wells. Glassbeads are a profitable alternative to filtergravel.