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Is it to be open or can be closed ? If the former, the major loses can be due evaporation, keep the opening as small as possible and safe. If there is a wide opening as beakers have, try to put aluminium foil cap freely sitting on the beaker top, if applicable. Or a "watches/clock glass", typically used to cover beakers. Additionally, try to wrap ...


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What are these people doing differently than in that school incident? The plaster casting of the human body is a totally different process compared to the incident at school. At school, it was a liquid plaster of Paris paste ready for molding. Nowadays, plaster casting is done in medical purposes differently. First they put thin stockinette (e.g., Delta ...


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