15mm Mini Boss Head Clamp Pack Size_7 Open-top cylindrical dropping funnel in

Open-top cylindrical dropping funnel in borosilicate glass holds 50mL with PTFE key stopcock for controlled liquid addition in chemistry procedures

sized for short-reach high-current branched circuits where shielded-plug safety is required

and cone — on interchangeable ebonite-insulated pillars

this silk square gives friction rods a strong positive charge for triboelectric and electrostatic demonstrations

expanding and closing to suit different optical-component sizes on a single bench-mounted holder

15mm Mini Boss Head Clamp Pack Size_7 Open-top cylindrical dropping funnel inCompact metal mini boss head sized for 15 mm rods, connecting lightweight clamps and accessories to retort stands in small scale laboratory assemblies.