Clean the Vapor Source Tube

A clean vapor source tube is as important as high-purity vapor sources. Clean the tube when changing vapor sources or when the vapor source becomes discolored

  1. Preheat a drying oven to 110 ºC.
  2. Check the bowl of the ultrasonic cleaning unit to ensure it is clean.
  3. Use five grams of Alconox® (or other suitable laboratory detergent) per 500 mL of warm water and fill the reservoir of the ultrasonic unit with enough water to cover the vapor tube. Ensure the detergent is dissolved prior to placing the vapor tube into the water. If too much detergent is used, it may be difficult to rinse from the tube.
  4. Fill the vapor tube with warm water and place it in the ultrasonic cleaning unit. Power on the ultrasonic cleaning unit for approximately 15 minutes.
  5. Remove the vapor tube from the reservoir.
  6. Clean the interior of the tube with a sample tube brush.
  7. Rinse the vapor tube with hot water, then with isopropyl alcohol. If isopropyl alcohol is not available, deionized water may be used to rinse the tube.
  8. Stand the vapor tube on a sample tube rack and place the rack in the preheated drying oven for two hours.
  9. Remove the tube from the oven and allow to cool.
 
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