"solar filter"

Improves visibility in sodium and potassium flame tests.

Buchner filtering flasks are made of high quality, heavy duty borosilicate glass.

Useful for adding powder chemical to reaction vessels.

For Use With Solar Cell.

Use the solar radiation shield with HOBO external sensors for improved temperature measurement accuracy in locations exposed to sunlight.

Economical and effective.

Operates 1/2 to 3 volts, 100ma start-up / runs at 15ma no load.  Strong torque - 300 RPM @ 1/2 volt. Great for gear drives.  2mm shaft dia. Size 1 1/4" dia x 1 1/4" long. 

Learn how sunglasses work!

Easily determine pH with the universal indicator chart.

What Happens When You Combine All Colors of Light?