Hoffman Voltameter with PTFE Stopcocks, Borosilicate Glass Subcategory_Specific Gravity Bottles Fine 40-60 mesh iron filings

Fine 40-60 mesh iron filings in a 100-gram sprinkle bottle

and great vessels on a mounted base for cardiology and anatomy teaching

sized for classroom illuminance and light-intensity investigations

the f/3 curvature stretching the focal throw for demos that need the focal point set comfortably beyond the mirror face

5 newtons for measuring small forces during spring-law and tension-force classroom investigations

Hoffman Voltameter with PTFE Stopcocks, Borosilicate Glass Subcategory_Specific Gravity Bottles Fine 40-60 mesh iron filingsBorosilicate glass Hoffman electrolysis apparatus fitted with chemical resistant PTFE stopcocks, two 50mL graduated outer tubes, a 200mL bulb, plus platinum and carbon electrode sets.