Method and device for detecting viscosity alterations of a medium stirred by a magnetic stirrer
DE4231931C1
Laboratory magnetic stirrer with heated plate - has upwards ventilation shaft from a wall within the housing to form an air cushion to reduce heat build=up
DE4231930C1
Magnetic stirrer with heated plate - has a shrouding between heated plate and magnets to reduce heat flow into the housing
DE4136504A1
Laboratory unit esp. magnetic stirrer unit - has hot plate surrounded by contact guard to prevent burns
DE4125735A1
Drive speed changing appts. e.g. for motor of laboratory stirrer - comprises switchgear, with manually operated potentiometer
