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.
The cedar elm (Ulmus crassifolia) features a rounded canopy of branches, and the tree possesses the smallest leaves of any of the native elm trees in the United States. The leaves are from 1 to 2 inches long and an inch in width. The cedar elm is a popular shade tree in states such as Texas and Oklahoma, and it grows native there as well as in portions of Louisiana, Arkansas and Mississippi. The tree will grow quickly in moist soil to as high as 80 feet.