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How can I be sure my Thermophore® is producing moisture?
 
After placing the hot pack unit inside the cover, plug the unit in and lay it out flat on a glass or Formica table or counter top. Either hold the switch down (if you are using the original Automatic Moist Heat Pack™) or push the "on" button (if you are using the Arthritis Pad™). Let the unit warm for about 5 minutes to activate the moisture in the fleece cover. When you pick up the pad at the end of 5 minutes, you should see tiny moisture drops on the glass or Formica surface. If you run your hand over the surface, you can feel the moisture and see streaks of water.
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