Glass Test Tubes for Laboratory (4 Inch)

Glass Test Tube also known as a culture tube or sample tube of lab glassware. Test tube consisting of a finger-like length of glass tubing, open at the top and closed at the bottom side. This test tube is usable in all types of laboratories linking chemistry, biology or bio-sciences, clinical medicine, textile lab, etc. It also uses flower vases, glassware for certain weak shots, or containers of spices, raising queen ants during the first months of development.