Reusable PYREX rimless culture tubes offer greater convenience in plugging and rack storage. Ends are fire-polished. The 22 and 25mm o.d. tubes do not have marking spots.

Beaded rim These test tubes are well annealed, resistant to heat and chemically stable. Rims are fire-polished. The 25mm tube does not have a marking spot.

With lip Tubes 10 mm through 18 mm o.d. have marking spot. Listings indicate length x o.d. in mm.

These reusable PYREX® rimless culture tubes offer greater convenience in plugging and rack storage. Walls and bottoms are of uniform thickness. Ends are fire-polished.