EXHIBIT A AGREEMENT JOINT FILING OF SCHEDULE 13GJoint Filing Agreement • February 10th, 2011 • Perlysky Dov • Services-management consulting services
The undersigned hereby agree to jointly prepare and file with regulatory authorities an amended joint Schedule 13G and any future amendments thereto reporting each of the undersigned's ownership of securities of Pharma-Bio Serv, Inc. and hereby affirm that such Schedule 13G is being filed on behalf of each of the undersigned.
