Used hearing aids as well as equipment for testing hearing are fundamental to the success of CIHS. Money is required to purchase batteries, earmold materials, assist with air fares for training teams, and to provide necessary training materials and test equipment. Wanted Please go through your dresser drawers and forward old aids to us. Any make or model, any condition... We will have them repaired whenever possible. Any new or used audiological equipment will be gratefully received. We also need financial help to carry out the many programs offered to developing nations.