The orientation of purple membrane in gels for photoelectric measureme
nts is relatively poor, when they are prepared with the standard techn
ique of applying a DC electric field and rapid polymerization. We have
improved it by adding a high magnetic field (17.5 T) and increasing t
he viscosity of the membrane suspension. This process has resulted so
far in a 3-fold increase of the photoelectric signals obtained. The ma
gnetic susceptibility of purple membrane was determined.