12PK Test Tubes with Cork Stoppers, 25mL, 18x150mm - Borosilicate Glass

PACK OF 12 || Includes a 12 pack of 25mL glass tubes fitted with cork stoppers INDUSTRIAL QUALITY GLASS TEST TUBES || 25mL (0.84oz) capacity Test Tubes are made of industrial quality, heavy-duty borosilicate 3.3 glass. They measure 150mm (5.9") long and 18mm (0.7") in diameter, with a 1.2mm uniform wall thickness. Can withstand direct flame, high temperatures & thermal shocks PREMIUM SIZE #6 CORK STOPPERS || Corks are made of durable, natural bark material. The reliable construction will not crumble or break easily. Each size 6 stopper measures 24mm in length, a 13mm bottom diameter, and a 19mm top diameter TIGHT SEAL || Corks provide a tight fit into the mouth of tubes, but are still easy to insert and remove MULTIPLE USES || Designed for use in professional laboratories, these tubes with corks are also ideal for storing liquids, powders, seeds, beads, and more Pack of 12 borosilicate glass test tubes are each fitted with a size 6 natural cork bark stopper. Tubes have a 25mL capa