Cylindrical Dropping Funnel with PTFE Stopcock and 29/32 Plastic Stopper, 500mL, Ungraduated, Borosilicate Glass Glass Flasks_Volumetric Flasks -Class B equipping a class for dual-diameter

equipping a class for dual-diameter compound-pulley experiments without cord-threading setup

Used to introduce semiconductor rectification

sized to mount alongside a tone generator for converting electrical signals into audible tones during sound-wave demonstrations

Hand-crafted hardwood test tube rack with six 25 mm holes and six drying pins on a single tier

Cylindrical Dropping Funnel with PTFE Stopcock and 29/32 Plastic Stopper, 500mL, Ungraduated, Borosilicate Glass Glass Flasks_Volumetric Flasks -Class B equipping a class for dual-diameterCylindrical dropping funnel in borosilicate glass holds 500mL with PTFE stopcock and 29 32 plastic stopper for controlled liquid addition.