100-Pack Borosilicate Glass Capillary Melting Tubes, 4 inch, Open Both Ends

This pack of 100 borosilicate glass capillary melting tubes measures 4 inches in length with a 0.2 mm wall thickness. The tubes are open at both ends for easy filling and cleaning. The borosilicate glass construction provides resistance to thermal shock and chemical attack. These capillary tubes are designed for determining the melting points of solid substances in laboratory settings. The thin wall and small bore ensure rapid heat transfer for accurate melting point readings.