Filter Sand For Down Filter, With The Following Specifications:-Effective Size (D10%) 0.5 Mm-(D90%) 1.05Mm-Coefficient Of Spherity 0.8-Coefficient Of Uniformity 1.5-Average Porosity 0.412 %-Smallest Grain Diameter 0.42 Mm-Largest Grain Diameter 1.41 Mm-Mean Equivalent Diameter 0.87 Mm-Solubility In Conc Hydrochloric Acid (1.2G/Cm3 At 20 C) ≪5%, Anthracite For Filtration, With The Following Specifications:-Effective Size (D10%) 1.0 Mm-(D90%) 1.60 Mm-Coefficient Of Sphericity 0.47%-Smallest Grain Diameter 0.71 Mm-Largest Grain Diameter 2.00 Mm- Average Equivalent Diameter 1, 241 Mm-Solubility In Conc Hydrochloric Acid (1, 2G/Cm3 At 20 C) ≪2, 5%, Washed Boulder, Size Classified From 1.1/2 To 3/4. High Hardness Boulder, Consisting Of Rounded And Smooth, Non-Friable Fragments, It Must Be Visually Free From Grit, Mica, Sand, Silt, Clay, Dust, Iron, Manganese And Organic Impurities. No More Than 8% Of The Mass Should Be Greater Or Smaller Than The Specified Size. The Percentage Of Thin, Laminated Or Elongated Pieces, In Which The Largest Dimension Exceeds Three Times The Smallest Dimension, Must Be A Maximum Of 2%. Material Must Be Packed In 50 Kg Bags In Material Resistant To Transportation, Stacking And Handling. There Must Be A Specification On The Packaging Of The Limit Size Of The Material., Size Classified From 3/4 To 1/2. High Hardness Gravel, Iron Manganese And Organic Impurities. No More Than 8% Of The Mass Must Be Greater Or Less Than The Specified Size . The Percentage Of Thin Pieces Must Be A Maximum Of 2%. Material Must Be Packed In 50 Kg Bags In Material Resistant To Transportation, Stacking And Handling. To 1/4.High Hardness Boulder, 10/04/2023, Classified Size From 1/4 To 1/8.High Hardness Boulder, Classified Size From 1/8 To 1/16.High Hardness Boulder, Classified Size From 1/8 To 1/4.High Hardness Boulder, Graded Size From 1/4 To 1/2.High Hardness Boulder
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