"Tubes"

Will Not Scratch.

Gentle nylon test tube brushes.

Highly evacuated electron tube with focusing electron gun and fluorescent screen inclined relative to the beam axis, so that the path of the beam can be seen and the effects of electric and magnetic fields can be studied. The electron beam can be deflected electrically in the electric field of the built-in plate capacitor, and magnetically by using the Helmholtz coil pair (not included). By adjusting the electric field so that it cancels the magnetic deflection, it is possible to determine the specific charge (e/m) and the velocity of the electrons.

Investigate the spectral pattern of different gases.

Bulk rolls for easy length adjustment.

Provides an Optimum Seal Every Time.

Excellent for cleaning semimicro tubes and other small apparatus. Has black nylon bristles with fan style tip mounted in twisted galvanized wire. Brush area is 1.5 cm in diameter by 7 cm in length; overall length is 15 cm. Package of 12.

Teacher Developed!

Demonstrate the power of a tornado in a bottle.

Tubes are suitable for collection, transport, and processing of capillary blood samples from infants, toddlers, children, geriatric patients, and patients in intensive care.

For identification of Gram-negative bacteria based on dextrose, lactose, and sucrose fermentation, and hydrogen sulfide production.

Relate Motion to Sound

Divide single source tubing into two with this autoclavable connector. Fine chemically resistant polypropylene. Package of ten.

For the differentiation of members of the Enterobacteriacaea based on H₂S production, indole production, and motility.

Soft tubing for patient comfort.

This unbreakable plastic thistle tube is ideal for the high school laboratory. It has a two piece construction with the stem tightly fitting into the funnel. Stem O.D.: 6mm. Length: 290mm. Package of 12.