PYREX 20x150 mm Disposable Round Bottom Threaded Culture Tubes, With White Marking Spot, Without Caps, Bulk Pack Case of 500

These disposable 20x150mm PYREX culture tubes have a round bottom, GPI 18-415 threads and come with a white marking spot. They are designed for both tissue culture and general bacteriological work. These tubes hold approximately 30 mL, are made from borosilicate glass, bulk-packed and are sold without caps. For disposable phenolic caps, see No. 99999.