IEC

This model is now IECs standard "Large" model Van De Graaff. The 250mm diameter ball is a good size and is in proportion with all the rest of the instrument's construction.

This model now uses an insulation tube to protect the belt, and the pulleys, the belt and the combs are accessible for inspection, cleaning or adjustment at both the top and bottom ends of the tube. The belt is a long lasting Silicone rubber and both performance and reliability is excellent.

The whole instrument can easily be dismantled down to the components to reduce size for transport.  The drive unit can be removed easily for return should repair be required.

NOTE:  IEC no longer makes the smaller model with the 200mm diameter ball.

VOLTAMETER HOFMANN ALL PLASTIC TYPE

Includes 1 x pair platinum electrodes

Plastic type  - Australian design & manufacture

WATER BATH FOR USE WITH IEC HOT PLATE (BATH ONLY)

A useful Water Bath that is powered by an IEC Hot Plate. Two test tube stands can fit so biological work is low cost and convenient. The ends of the bath slide down to rest on the work bench for a stable support but also slide up to provide the smallest size for storage. The bath can be used also as a dry oven.

A Thermostat Control (CH4240-101) fits to the edge of the bath to control the Hot Plate so the water temperature is held constant. This control is purchased separately.    

For an approximate temperature control,  the careful adjustment of the heat regulator of the Hot Plate can keep the water bath reasonably steady but not as regulated and accurate as the Thermostat unit.