50ml capacity, round bottom culture tubes / test tubes made of high quality heavy duty Borosilicate 3.3 glass. Fitted with Bakelite screw cap with a rubber liner to ensure a leak proof seal.
The culture tubes are autoclavable and features superior chemical durability. Low temperature gradient, allowing them to withstand high temperatures & thermal shocks. Each culture tube measures 5.9" tall and is 1" wide (including cap).