MTI Corporation provides the high purity quartz tube as replacement part for high temperature tube furnaces in universities, companies, and national labs. It can be used at operating temperature up to 1200ºC. 
Purchase Notes: Please make sure the specification of the tube meets your need before making a purchase. Since Nov 10, 2016, we no longer accept return delivery of any tubes due to the fragile nature of the materials. All tubes are not refundable, not exchangeable, nor covered under the warranty (Consumables). We apologize for the inconvenience. Please check the package for damages before accepting the delivery. For more information or damage upon arrival please contact us.

SPECIFICATIONS

O.D	50mm ±0.5mm (1.97")
I.D	44mm ±0.5mm (1.73")
Tube Length	1200mm (47")
Max. Operating Temperature	1200ºC
Application Notes	Vacuum pressures may only be safely used up to 1000°C The flow rate for gases should be limited to<200 SCCM (or 200ml/min) for reducing thermal shocks to the tube Quartz tubes are designed for using under vacuum and low pressure < 0.2 bars / 3 psi / 0.02 MPa In order get longer tube service life, Please use quartz or alumia crucible to carry sample, instead loading sample directly inside tube, please click picture below to choose one crucible boat:

Inspect your delivery:
Please check package for damages before accepting delivery.
Should damages 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.