In fact, the term microwave safe is not regulated by the government, so it has no verifiable meaning. It is often found in plastics marked No. 7, but may also be present in some plastics labeled with Nos. 1, 2 and 5 as well, according to the report. Better to stick to glass or ceramics.
What is BASELINE DATA? The first data that will be compared against future data.
baseline (plural baselines) 1  A line that is a base for measurement or for construction. A laser level generates a convenient baseline for interior work. 2  A datum used as the basis for calculation or for comparison. We used the last doctor visit to provide baselines for vital statistics.