Accubath™ Sapphire Wet Etching High-Temperature Process Tanks

Accubath XE-Lab Sapphire Wet Etch Bath


XE-Series for Sapphire Etching (Al2O3) & Beyond – For safe and reliable heating up to 300°C the Accubath™ XE was designed with Sapphire etching in mind but we know there are other processes that will benefit from the increased chemical reactivity that higher temperatures provide. Processes that were previously thought to be too slow due to temperature limitations may now be practical.

Designed to Take the Heat – The liquid in the Accubath Xe tank comes in contact with nothing but high purity quartz. No PTFE connections, sensors, or any other parts are used in the process area. Even the built in automated lid is quartz. For reliability, a special version of IMTEC’s patented Aquaseal was developed to prevent a failure of the critical seal material that isolates the heater components from the environment. Even the housing is special, utilizing ECTFE for its superior temperature and chemical compatibility as well as special construction techniques to isolate the heat inside.

Auxiliary Modules Make it Complete – No drain valve works at these temperatures so a quartz aspirator was designed and built in IMTEC’s quartz fabrication facility to remove the chemistry without having to wait for it to cool. The aspirator drains the tank to a cool-down module below the tank. The cool down module has quartz cooling coils to assist in lowering the chemistry temperature quickly. The modules working together create a system that addresses all the challenges of working with extreme temperature chemistries allowing you the freedom to experiment with processes previously not possible.

Accubath XE-Lab Sapphire Wet Etch Bath System
Accubath™ XE Series BrochureGet QuoteImtec Distributors


  • Inverted Quartz Autolid keeps condensate inside the tank
  • Quartz Cooling Coils minimize the vapor cloud near the lid
  • Patented Aquaseal lowers flange temperature and protects critical quartz to plastic sealant
  • Quartz air operated Aspirator effectively drains the process chamber even at max operating temperature
  • Quartz RTD wells protect the temp sensor and allow accurate temperature readings
  • Quartz Cool Down Box contains drained hot chemistry until it is safe for house facilities
  • Hydraulically Actuated Cylinder for smooth control of lid operation
  • Super high-density Aluminum Silicate Insulation keeps the heat in
  • Quartz inner chamber with heavy gauge Inconel Heating element
  • Quartz Locator Plate designed to hold your specified carrier
  • ECTFE Housing for superior temperature and chemical compatibility
  • Quartz Secondary Containment Tank holds hot liquid in case of tank breach.
Accubath XE-Lab System Features


Accubath Sapphire
Wet Etch Tank
Tank Material
Virgin Annealed
Quartz, Firepolished
Housing Material,
Sensor 1
Two RTD Probes
Sensor 2
(Cool Down Tank)
One RTD Probe
Heater Elements
High Watt Density
Inconel Foil
High Density
Aluminum Silicate
Max. Operating
Operating voltage
Model Dependent
Limited Warranty
One Year
Model Dependent