Flat Head Solid Cone Stopper, 19/26, Borosilicate Glass Glass Flasks_Volumetric Flasks the f/3 curvature stretching the

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

and engraved index line for reference alignment

supplied in five colors at two leads per color so paired wiring stays color-coded across both sides of a circuit

Melting point apparatus with a thermometer holder and capillary tube wells for determining the transition temperature of organic solids in organic chemistry laboratories

Built for heat and abrasion resistance

Flat Head Solid Cone Stopper, 19/26, Borosilicate Glass Glass Flasks_Volumetric Flasks the f/3 curvature stretching theFlat head solid cone stopper in borosilicate glass features 19 26 cone for sealing ground joint vessels and chemistry apparatus.