"Tubes"

Natural bristle test tube brushes.

Spectrum Tubes demonstrate the wave properties of different gases.

These autoclavable straight connectors are molded of polypropylene and have serrations to hold tubing tightly and prevent slipping. They have excellent chemical and temperature resistance. O.D.: 6–8mm. I.D.: 3.11mm. Arm Length: 21.9mm

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Standard plastic holders accept disposable and reusable double-ended needles with threaded hubs

Guinea and feather tube apparatus with 6 induction coils connected in series.

Convenient reference helps reduce blood collection errors.

100 feet of extra tubing for TeacherGeek projects.

Tube holder is made of robust plastic for holding D-series electron tubes. Stand has a wishbone, 360° rotating clamp made of heat-resistant plastic and two base holes for affixing the Teltron Helmholtz Coils. On rubber feet to prevent slipping.

One brush for all test tube sizes.

A Low-cost way to organize tubes.

A set of four borosilicate glass tubes of different shapes connected together to illustrate that liquids will stand at the same level.

Quality nylon brushes for gently cleaning test tubes.

This safe spectrum power supply features encased spectrum tubes.

Versatile swivel bosshead test tube clamp holder to increase user friendly operations.

Y-shaped connector with a 120° angle provides safer connections as the ends have constrictions to hold rubber tubing securely.

Hardened steel wheel cuts glass tubes up to 1¹/₂" dia. Two V guides align the tubing and wheel is spring loaded to stay open.