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.
Definition of baseline for English Language Learners. : information that is used as a starting point by which to compare other information. : a line at either end of the playing area in games like basketball and tennis.