Speaker
Description
The developed in vitro exposure system allows a computer controlled blinded and simultaneous exposure of 12 Petri dishes (60 mm diameter) per group with 50 Hz or 16.7 Hz magnetic flux densities up to 6 mT (both groups within the same incubator). The orientation of the applied magnetic field vector can be alternatively selected (by computer control) between horizontal or vertical direction. The setup is hermetically shielded by Permalloy sheets against low frequency magnetic and electric fields in order to avoid confounding by stray fields of the environment or the incubator itself. Moreover, the setup allows for a substitution of the 50 μT geomagnetic field inside the shielded exposure chambers of the setup. Field inhomogeneity is < ± 4 %. The residual magnetic flux density and electric field strengths in the location of the Petri dishes are < 0.02 μT and < 0.5 V/m, respectively. Vibration is < 0.05 m/s2 up to 200 μT and < 0.1 m/s2 up to 6 mT.
