Size:Any size Natural Zeolite within 20-400mesh Cation Exchange Capacity: 100-150mlmg/100g Colors: Grey, Green, Brown, Pink, B ... , 1-3mm, 2-4mm, 3-5mm, 5-8mm, 8-10mmCation Exchange Capacity: 100-150mlmg/100g Good quality, competitive price, on-time ...