ACUALINE High Density 110 gm, 5 Micron, Food Grade, BPA Free, Lead Free, Virgin PP Spun Filter, 99% filtration efficiency with low pressure drop removes sand, dust, rust, silt and suspended particles from the input water and protect the filters and RO membrane from choking. Replace the RO candle filter every 3-4 months to extend the service life of water purifier filters and membrane, save the bigger expenses of replacement. ACUALINE focus on quality, durability, and user-friendly design ensures a positive experience for customers while promoting environmental sustainability.