Rapid Searles Surface Tension Balance Kit

This Searles Surface Tension Balance can be used to demonstrate the surface tension of a liquid by allowing it to be shown on a graduated scale.

A horizontal frame is mounted on a rod fitted to a base and carries a steel wire stretched across it, the tension of which can be adjusted by a tightening screw. A lightweight metal pointer with a counterpoise is attached to the centre of the wire by a clamp. A pan is hung from a notch in the pointer and has a hook at its underside from which can be suspended a light weight rectangular frame or a metal clip to hold a microslide edge. The tip of the pointer moves over the graduated scale.

• Supplied complete with rectangular wire frame, slide clip, six microslides, 3m of spare wire and full instructions.