Hitech 99.8 % Recrystallized Alumina Tube are Pure White in colour and made with 99.9% purity. Hitech 99.8 % Recrystallized Alumina Tube can be used up to 1800oC as maximum temperature. As 99.8 % Recrystallized Alumina Tube are well Polished and Pure, they won't react with other materials.