Test Tubes Borosilicate Glass with Cork

These test tube glass is made of heat-resistant borosilicate glass, non-toxic and safe, high quality. Check the cork lid that can be closely attached to the 25mm diameter test tube, enabling good sealing performance and can effectively prevent liquid leakage.

• Package Includes : 50x Tubes
• Used as the reaction vessel in a small amount of reagent and used in room temperature or heat.
• Fire polished ends on Both Sides.
• Durable in use