Van De Graaff Upgrade Kit For Old Models class Burette Brush has a twisted

Burette Brush has a twisted wire handle

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and the choice of receiver material

serving as a visual representation of magnetic field lines

This Multifunction LED Timer measures and displays time intervals up to 999

Van De Graaff Upgrade Kit For Old Models class Burette Brush has a twistedThe Van De Graaff Upgrade Kit is suitable for both small and large models. It enables conversion of very old models (that have a non ball bearing upper pulley) to later models with ball bearings in the upper pulley. The kit also replaces the pulley mounting and combs, and includes a new charging belt. A Van de Graaff generator creates and accumulates a significant amount of static electricity on a metal sphere. Upgrade Kit Includes: 1 x Top pulley