A variety of tube cap options to meet needs. Test Tube Caps are overfitting caps for use with culture tubes.

• Two-position are only available in natural color
• Standard test tube stopper caps are available in a wide variety of sizes and colors
• Flat top stopper caps are designed to fit a variety of test tube sizes

Two-position caps are available non sterile or gamma irradiated for sterility.

Position one: Loose for aerobic culturing.

Position two: Tight for anaerobic culturing and leakproof sealing.