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parkin• 2" high x 10" wide x 6 feet long
Includes semi hard zipped case
Phase 1™ black fleece SYNC System liner included
such as studying chemical reactions
Toothpaste Evaluation Kit Whistles & Lanyards parkin• 2" high x 10"Study of the chemical composition of toothpastes. Students evaluate several toothpastes for percent of solids, pH, foam formation, abrasive action, specific substances. They use this data to make judgments about their effectiveness. Materials for 12 pairs of students. Grades 7 12.
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