Lab Supplies

Silicone Stopper, Size #7

Fits 500mL Pyrex Erlenmeyer. Silicone stoppers are particularly useful due to their inert and nonreactive nature. Heat to 450°. Chemical resistant. NC-14664

$2.99

Ring Clamp, (6 inch), pk/5

These steel ring clamps have a 6 inch outer diameter ring which can be rotated and locked at any angle. The inner diameter is 5.25 inches. Length is 9.5 inches; 6 inches from center of ring to center of bosshead. Set screw is nickel plated steel. NC-13231. Sold in a pack of five.

$81.50

Formaldehyde (Formalin), 37%, 16oz

A colorless liquid with a strong pungent odor and soluble in water and alcohol. Uses include as preservatives, embalming fluids and as a corrosion inhibitor. Restricted to Standard Ground only. NC-1930

$21.95