By Colleen Cross
SiLibeads glass beads are an alternative to gravel filtration and the brainchild of German company Sigmund Lindner.
The company was at the NGWA’s Groundwater Week last December where representatives said the zirconium oxide and zirconium silicate beads are more consistently sized and less prone to breakage and encrustation than quartz and gravel.
The beads are available for many applications, including as water filters. According to the company, they are microbiological and chemically pure, precisely spherical and uniform, and designed to conserve backwash well water and suit maximum well capacity.
The beads have a high crush strength and abrasion resistance compared to gravel, the company literature says.