An ideal starter set for any laboratory, this set contains threedurable borosilicate Erlenmeyer flasks in sizes of 50 mL, 150 mL, and 250 mL. Borosilicate glass flasks are designed to give the best combination of thermal shock resistance and physical strength. Features heavy-duty rims and graduations in durable white enamel. Features heavy-duty rims and graduations indurable white enamel.