Pyrex Borosilicate Flat Bottom Flask - 250 mL

Pyrex Borosilicate Flat Bottom Flask - 250 mL

• Sold as an Each
• Can be used for a wide variety of sports
• White numbers on colored backgrounds are clearly visible
• Scoreboard folds up flat for easy storage
• Features extra black lining in the corners for extra strength

<div class="aplus"><p>The Corning Pyrex Borosilicate Glass Flat Bottom Boiling Flask is a 250mL, long-necked flask for heating and boiling liquids. The neck accepts a #5 stopper (sold separately) and has a tooled mouth for a smooth stopper fit. Flat-bottom flasks can be set on a surface. This flask is made of No. 7740 Pyrex brand clear borosilicate glass for durability and chemical- and temperature-resistance, and its uniform wall thickness provides mechanical strength for shock-resistance. Borosilicate glass has a low coefficient of thermal expansion and is resistant to thermal stress. Boiling flasks provide uniform heating of liquids for quality testing, sampling, and research in chemistry, education, research, and life science applications. </p> <table border="1" width="800" cellpadding="2" cellspacing="0"><tbody><tr bgcolor="#dfe1e0"><th colspan="2" align="left"><b>Specifications</b></th></tr><tr><td>Flask style</td><td>Flat-bottom boiling</td></tr><tr><td>Material</td><td>Borosilicate glass (No. 7740)</td></tr><tr><td>Capacity</td><td>250mL</td></tr><tr><td>Stopper size</td><td>#5</td></tr><tr><td>Top style</td><td>Tooled mouth</td></tr><tr><td>Working temperature</td><td>230 degrees C</td></tr><tr><td>Dimensions</td><td>134mm height, 82mm OD</td></tr></tbody></table><br/> <p>Flasks are glass or plastic containers for storing or collecting chemical samples or solutions in scientific laboratories. They come in a variety of sizes and shapes and are designed for a wide range of scientific processes. Erlenmeyer flasks, introduced by German chemist Emil Erlenmeyer in 1861, are shaped like a cone with a wide, flat base that narrows to a neck opening, which can be closed with a stopper or cap. </p> <p>Corning manufactures consumable glass, ceramics, and plastic laboratory tools under the brands Corning, Costar, Cellgro, Pyrex, Axygen, and Gosselin, among others. The company, founded in 1908, is headquartered in New York, NY.</p></div>