stonylab Glass Test Tubes, Transparent Borosilicate Round Bottom Tubes with 20 mm Diameter and 150 Length for Lab Use, 40 Pack

Multipurpose Usage: ideal for various laboratory tasks like mixing reactions, heating reagents, and sample storage Precise Dimensions: with an outer diameter of 20 mm and a length of 150 mm, offering a capacity of 30 ml and heat resistance up to 200°C Clear Visibility: transparent material enables easy observation of experiment reactions or solution changes Premium Material: crafted from robust borosilicate glass, ensuring durability, resistance to acids and alkalis, corrosion resistance, and reusability Warranty: StonyLab 1-year limited warranty; if received damaged, please contact us immediately; we will solve it until satisfied