Made of 99.7% -pure aluminum oxide. Hardness greater than agate. Impervious to liquids under vacuum. Highly resistant to corrosion by chemicals. Hardness 83 on Rockwell 45N scale. Given minimum sample contamination.
Glazed, spoon on one end, spatula on other.
Glazed, long spatula on one end, knob on other. Length 205 mm.
Porcelain, Glazed with long spatula on both ends.
Porcelain, one side glazed.
Streak, unglazed, as used for arsenic test and by mineralogists.
Made of 99.7% pure aluminum oxide. Highly resistant to alkalis and other fluxes. Highly refractory and inert in hydrogen and carbonaceous atmospheres.
99.7% Alumina Tray, Rectangular, unglazed. Max. use temp. 1750°C.
Pipeclay stems on iron wire.