Buy Round Bottom Test Tubes Made from Boro 3.3 Exp Glass with Rim and Graduations in Amber Color for Reliable and Precise Measurements. These high-quality test tubes are crafted from durable borosilicate 3.3 expansion glass, known for its excellent resistance to thermal shock and chemical corrosion. The round bottom design ensures even heat distribution, making them ideal for heating, mixing, and chemical reactions in the lab.The amber color provides protection from light-sensitive substances, while the graduated markings allow for accurate measurement of liquids. The rim adds strength and ease of handling, making these test tubes versatile and reliable for a wide range of laboratory applications.Global Shipping from EnvMart – Order your Round Bottom Test Tubes with Rim and Graduations in Amber Color today for fast and reliable delivery worldwide