Filter sand (for slow and rapid use)

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last updated：May 12, 2023

日本原料川崎本社

Official site

The water filtration material made from Japanese raw materials is certified and registered by the Japan Water Works Association (JWWA)!

We would like to introduce our "slow/fast filtration sand" that we handle. The filtration material for water supply made from Japanese raw materials is certified by the Japan Water Works Association (JWWA). According to the Japan Water Works Association standard (JWWA A 103:2006-2), "Filtration sand must enable stable and efficient filtration and washing in filtration ponds and must comply with the specifications for main components, quality (physical properties), and quality (leachability)." 【Quality Specifications (Partial)】 <Physical Properties> ■ Washing turbidity [degrees]: 30 or below ■ Density [g/cm3]: 2.57 to 2.67 ■ Loss on ignition [%]: 1.3 or below ■ Abrasion rate [%]: 3.0 or below ■ Hydrochloric acid solubility [%]: 3.5 or below *For more details, please refer to the PDF materials or feel free to contact us.

Related Link - https://genryo.co.jp/filtersand/sand-basic/

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basic information

【Other Quality Regulations】 <Leachability> ■ Taste: No abnormalities ■ Odor: No abnormalities ■ Color degree: 0.5 or less ■ Turbidity degree: 0.2 or less ■ Iron and its compounds [mg/L]: 0.03 or less ■ Manganese and its compounds [mg/L]: 0.005 or less *For more details, please refer to the PDF document or feel free to contact us.