procurement of high energy ball mill system , miscellaneous item: , grinding jar of zirconium oxide 100+/- 25 ml , grinding jar of zirconium oxide 45+/- 5 ml , grinding jars of tungsten carbide 45+/- 5 ml , high energy ball mill with two grinding stations , cooling lubricant 50 ml , grinding balls of tungsten carbide 10mm diameter , grinding balls of tungsten carbide 3 mm dia meter , grinding balls of zirconum oxide 2 mm diameter , grinding balls of zirconium oxide 10 mm diameter , o-ring for grinding jar 45 +/- 5 ml , o-ring for grinding jar 100 +/- 25 ml , test sleve of 8 x 2 inch 1 . 00 mm , aeration lid for grinding jar 45 +/- 5 ml of zirconium oxide , aeration lid for 100 +/- 25 ml grinding jar of zirconium oxide