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The 250 ml Reagent Bottle with plastic stopper is constructed from clear, chemically resistant borosilicate glass and features a narrow mouth for safe storage of laboratory reagents, chemicals, and solutions. This bottle includes a polypropylene or polyethylene plastic stopper that ensures an airtight seal, minimizes evaporation, and prevents contamination of sensitive substances. Designed with a height of approximately 140 mm and an outer diameter of 72 mm, it complies with ISO and DIN laboratory standards for easy compatibility and handling. The bottle is marked with white enamel graduations for accurate measurement and sample labeling. Ideal for routine storage, mixing, and preservation in chemical and biological laboratories, classrooms, and research facilities.