Tubes are made from borosilicate glass. With conical shaped bottoms on the 5, 10, and 15mL sizes and a bullet-nosed shape on the 50 mL size to withstand centrifugation up to 2980 RCF. The 5, 10, and 15 mL sizes have a finished top for a snap-cap closure. The 50 mL size has a tooled top. Tubes are plastic shrink wrapped in modular trays to keep them clean and safe in transit. Snap-cap closures are not supplied. (K73790)
