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 conform to the specifications for main components, quality (physical properties), and quality (leachability)." 【Quality Specifications (Partial)】 <Physical Properties> ■ Cleaning turbidity [degrees]: 30 or less ■ Density [g/cm3]: 2.57 to 2.67 ■ Loss on ignition [%]: 1.3 or less ■ Abrasion rate [%]: 3.0 or less ■ Hydrochloric acid solubility [%]: 3.5 or less *For more details, please refer to the PDF document or feel free to contact us.
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【Other Quality Standards】 <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.
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For more details, please refer to the PDF document or feel free to contact us.
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Our company is a water treatment manufacturer that has been working alongside Japan's water supply industry since its founding in 1939. We are committed to contributing to the resolution of all water-related issues with foresight and outstanding technological capabilities, regardless of whether it is for drinking water, wastewater, or stormwater, in order to ensure safe and secure water and to protect the environment. Please feel free to contact us if you have any inquiries.