Disposable culture tubes are manufactured from high quality 5.1 expansion borosilicate glass. Rimless design enables easy plugging using a stopper. Caps not included. Meet USP Type I and ASTM E438, Type I, Class B requirements. Tubes are packaged in shrinkwrapped boxes to keep them particle-free,…

Disposable culture tubes are manufactured from high quality borosilicate glass. Rimless design enables easy plugging using a stopper. Caps not included. Tubes meet ASTM standards and are alkali-free and inert.

Manufactured from 5.1 expansion borosilicate glass conforming to USP Type I and ASTM E438, Type I, Class B requirements, these test tubes are great for any lab. Each tube has a marking spot and reference mark for orientation during use and a threaded neck to accept screw cap, not included.

Tubes with round bottoms are manufactured from ASTM E438 Type 1 Class A Borosilicate 3.3 glass. Includes polypropylene autoclavable screw cap with PTFE liner.