Things You'll Need. Sink a papyrus plant's container in a pond or other water feature so that the container's top is up to 12 inches beneath the water surface, or grow the plant directly in boggy, wet soil near the margin of an outdoor pond.
Ham should not sit at room temperature any longer than 2 hours.
Room-Temperature Test. 1  Let your magnet and thermometer sit out at room temperature for at least 30 minutes. 2  Repeat steps 3â6. Note: In this case, you do not need the additional 10 minutes between trials, as the magnet stays at room temperature all the time.