hand pouring yellow blue liquid scientific laboratory glass erlenmeyer flask with glassware equipment reflective |
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| navigate by keyword : analysis background beaker blue bottle chemical chemist chemistry clear color concept development discovery drop education element equipment erlenmeyer experiment flask fluid formula glass glassware isolated lab liquid medical mixing object reaction reflection research scientific study test transparent tube yellow |
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| Hand pouring yellow in to blue liquid in scientific laboratory glass erlenmeyer flask with glassware equipment on reflective surface. |
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