Sterile test tubes with overfitting two-position caps are ideal for cell culturing and other applications that require a sterile surface. Overfitting caps have inner ribs for two-position fits: loose for aerobic culturing and tight for anaerobic culturing and sealing. Molded in tabs allow for…

Caplugs Evergreen's test tubes are ideal for a variety of general laboratory applications, offering more sizes than any other manufacturer.  Tubes are bulk packed, non-sterile, without caps.  Polystyrene tubes provide clarity and are appropriate for use with mild acidic…