A precision-engineered external ground glass joint reaction tube for laboratory chemical reactions, equipped with a glass cock. Manufactured from high-quality borosilicate glass for excellent thermal and chemical resistance. Key Features 

✔ External Ground Glass Joint – Ensures secure, airtight connection with matching laboratory glassware. 

✔ Glass Cock – Enables precise flow regulation, ideal for reactions requiring inert material contact. 

✔ Borosilicate Glass – Offers excellent thermal shock and chemical resistance, suitable for diverse reaction environments. 

✔ Cylindrical Design – Provides ample reaction volume and facilitates observation of reaction progress. 

✔ Polished Joint Surface – Guarantees smooth assembly and disassembly with minimal wear.