... /20mm/23mm17mm/20mm/23mmokAppearance transparent glassy balltransparent glassy ballokPH valut 7±0.57±0.5okArsenic (As)mg/L≤0.005<0 ... . UF System,4. RO System,5. Purifiers,6. Dispenser,7. Filter Media,8. Water Filter,9. UV Sterilizer,10. Essential Oils,11 ...