3.0" OD larger diameter Alumina tube is made of high purity 95% Al₂O₃ material. Such an alumina tube can be used at operating temperatures to 1700 ^oC in both oxidizing and reducing atmospheres. Tubes have been evacuated to 10^-7 Torr at room temperature.

SPECIFICATIONS

Purity	Al2O3 > 95%, SiO2 < 0.25%, CaO+MgO < 0.3%
O.D	3.00" +/- 0.04    ( 76 +/- 1 mm)
I.D	2.64" +/- 0.04    ( 67 +/- 1 mm)
Tube Length	1000 mm
Detailed dimension drawing
Purity	> 95%
Max. Working Temperature	1700 °C (3092°F)
Warning	Do NOT use an alumina tube under a vacuum at a temperature > 1500°C. Max heating or cooling rate < 5°C/ minute. Please keep the thermal gradient less than 100°C/ inch to avoid cracking. Please separate parts from the inside surface of the tube to avoid thermal shock. Please handle the tube carefully. No warranty for the tube.
Application Notes	Please click here to learn how to use and maintain an Alumina tube in MTI high-temperature tube furnace. In order to get longer tube service life, Please use quartz or alumina crucible to carry the sample, instead of loading sample directly inside the tube, please click the picture below to choose one crucible boat:

Inspect your delivery:
Please check the package for damages before accepting delivery.
Should damages be found, please keep all packaging materials, take pictures, and report immediately to carrier/MTI.

No Warranty:
Kindly note this item is a consumable part, and not covered by warranty. Make sure to inspect for defect(s) thoroughly before use.