Clean the Penetrometer

Clean, dry penetrometers are essential for accurate, reproducible results.

  It is recommended that rubber gloves be worn when handling penetrometers.
  Never use an ultrasonic bath to clean penetrometers. Ultrasonic cleaning systems will damage the metal plating and remove the serial number information.
  1. Dissolve Alconox® (or other suitable detergent) in water. Ensure the detergent is completely dissolved before placing the penetrometer into the solution.
  2. Place the mercury waste container in a shallow pan of water in case of spills.
  3. Hold the penetrometer upright over a mercury waste container to allow any accumulated mercury to drain out.
  1. Remove the cap from the penetrometer If the cap is difficult to remove, see Penetrometer Nut.
  2. Turn the penetrometer over and pour remaining sample into the waste container.
  3. Immerse the penetrometer in the detergent solution. Clean the outside of the penetrometer stem and the bulb with a brush. Then clean the inside of the stem with one of the smaller brushes.
  4. Rinse the penetrometer with warm water. Hold the penetrometer upright and enure that water runs from the bulb through the stem freely.
  5. Rinse the penetrometer with IPA.
  6. Immerse the stainless steel cap and nylon closure components in the detergent solution. Clean with appropriate brushes and rinse in warm water.
  7. If there is any mercury in the bottom of the detergent solution, dispose of the solution properly.
  8. Use dry nitrogen to dry the penetrometer, cap, and closure components.
 
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