Coplin Staining Jar for 5 Slides, 4.25" Tall Diameter_7mm Metal-base one-meter potentiometer with 24

Metal-base one-meter potentiometer with 24 SWG constantan wire stretched along a millimeter scale

sized for side-by-side strength comparison against the chrome-steel cylindrical series of similar dimensions

accepting rods up to three-quarters of an inch for positioning apparatus at any angle

this green LED on a demonstration base with 4mm plug connections lights up when current flows in the correct direction

and plano-concave geometries for safer student-station optics

Coplin Staining Jar for 5 Slides, 4.25" Tall Diameter_7mm Metal-base one-meter potentiometer with 24Coplin staining jar holds five standard 76 x 25mm microscope slides upright in 4. 25 inches of stain or wash solution during histology processing.