I agree with Killer. I have done a bunch of test runs for Subbing and if you nuke a clean sample for about 8 seconds it seems to stay at about 97.3 to 97.8 for several hours. Just make sure your test is within 2 hours or so and you should be fine.
Allee Elm. Ulmus parvifolia. Ulmaceae. No Image Available: Height 30'-40' Spread 35'-45' Deciduous. The Allee Elm is a large deciduous tree that grows in most soils. Leaves turn a golden color in fall with distinctive peeling bark. Drought tolerant.
Ulmus americana. One of the grandest of American trees, the vase shape, and bright yellow fall colors make this a distinctive landmark tree. This most dignified tree was nearly wiped out by the Dutch Elm disease. This new resistant strain will grow anywhere in the U.S. with adequate water.