Glass Test Tubes

Featuring rounded bottoms and a deep thread finish for an extra turn of security for those important jobs, these heavyweights are fully annealed for maximum strength.
The rounded bottom allows for the efficient transfer of heat and easier cleaning. 

These glass culture tubes These glass culture tubes feature a durable construction to withstand the rigors of laboratory use. The screw cap provides an airtight seal to prevent sample contamination and evaporation. The clear glass material allows for easy visual inspection of the sample. The tubes are compatible with common laboratory techniques such as centrifugation, incubation and sample storage. They may also include graduation marks for accurate volume measurement and convenient sample identification.