Natural Abrasives

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    5/ 5
    <p>Diatomite forms by the accumulation of the amorphous silica remains of dead diatoms (microscopic single celled algae) in lacustrine or marine sediments. Tripoli consists of about 70-90 % SiO2, 3-12 % water and small amounts of organic constituents. These organic constituents are normally removed by calcination. During this process the powder can turn reddish (iron (III) compound).</p> <p>The normal, calcinated diatomaceous earth is chemically very resistant and non-combustible. Tripoli burns at 1200- 1700°C.</p> <p>Tripoli is used in powdered form as polishing agent for metals, stones and likewise or for the manufacture of metal polishing agents.</p> <p></p> <p>Technical Data<span style="white-space:pre;"> </span></p> <p>Physical and Chemical Data:<span style="white-space:pre;"> </span></p> <p>Color:<span style="white-space:pre;"> </span>yellowish-brown / pink</p> <p>G.E. Degree of whiteness:<span style="white-space:pre;"> </span>--</p> <p>Bulk density:<span style="white-space:pre;"> </span>190 g/l</p> <p>Density:<span style="white-space:pre;"> </span>370 g/l</p> <p>Specific weight:<span style="white-space:pre;"> </span>2.25</p> <p>Refraction index: 1.43</p> <p>Humidity (max % H2O):<span style="white-space:pre;"> </span>0.5 %</p> <p>pH-Value (10 % aqueous suspension):<span style="white-space:pre;"> </span>6.5</p> <p>Permeability (millidarcy): 300</p> <p>Sieve analysis (Tyler)<span style="white-space:pre;"> </span>% +105 mesh (&gt; 105 µm)<span style="white-space:pre;"> </span>2.5</p> <p>% +324 mesh (&gt; 44 µm)<span style="white-space:pre;"> </span>11.4</p> <p>Average particle size (µm):<span style="white-space:pre;"> </span>15</p> <p></p> <p>Chemical Analysis:<span style="white-space:pre;"> </span></p> <p>SiO2<span style="white-space:pre;"> </span>92.6 %</p> <p>Al2O3<span style="white-space:pre;"> </span>3.8 %</p> <p>Fe2O3<span style="white-space:pre;"> </span>1.6 %</p> <p>CaO<span style="white-space:pre;"> </span>0.6 %</p> <p>MgO<span style="white-space:pre;"> </span>0.3 %</p> <p>Other oxides:<span style="white-space:pre;"> </span>0.5 %</p> <p>Ignition loss:<span style="white-space:pre;"> </span>0.3 %</p> <p>These are average values.<span style="white-space:pre;"> </span></p> <p></p>
    031.194
    Diatomaceous Earth 6/0 very fine 50gr Grandi Liutai Italiani Abrasives

    Diatomaceous Earth 6/0 very fine 50gr

    €0.99

    Tripoli is used in powdered form as polishing agent for metals, stones and likewise or for the manufacture of metal polishing agents.

  • ,
    5/ 5
    031.193
    Powdered Pumice 6/0 Very fine 100gr GL Abrasives

    Powdered Pumice 6/0 Very fine 100gr

    €1.50
  • ,
    5/ 5
    <p>L’equiseto nella Liuteria è conosciuto dai tempi di Stradivari.</p> <p>Conosciuta con il nome di ASPRELLA o CODA DI CAVALLO, è una tra le piante più antiche della terra.</p> <p>Ha un aspetto con fusti cavi, può alzarsi tra i 2 e gli 8 metri di altezza, questo dipende dalle condizioni del clima e del terreno.</p> <p>Questa pianta oltre che nel campo farmaceutico e culinario è usata sin dai tempi antichi per levigare, sgrassare e lucidare diverse superfici anche metalliche.</p> <p></p>
    031.010
    Scouring Rush Whole Set of 30 pcs KREMER Abrasives

    Scouring Rush Whole Set of 30 pcs

    €3.90