Balances utilizing the principle of free magnetic suspension can be very useful for thermogravimetric experiments, especially if extreme conditions such as high pressure or corrosive gases are to be applied to the sample. Magnetic coupling systems with automatically controlled attraction can be used for direct conversion of weight into an electrical signal or for the separation of object and balance. The magnetic suspension balance is described and a new versatile magnetic coupling system with an extremely low dead weight is presented. Intended for use in industrial and scienific research institutions, the coupling provides microgram resolution and may be combined with unmodified commercial micro- or semimicrobalances.