9 STERILIZABLE, MINIATURE ELECTRONIC SENSORS FOR MEASURING PH, DISSOLVED OXYGEN, TEMPERATURE, OPTICAL DENSITY,CONDUCTIVITY, AND ELECTROMAGNETIC SPECTRA, THAT ARE CONNECTED WITH MINIATURE TRANSMITTERS FOR WIRELESS RADIO FREQUENCY COMMUNICATION WITH A RECEIVER UNIT AND ELECTRONIC DATA PROCESSOR AND A POWER SOURCE, FOR USE IN BIOLOGICAL ENVIRONMENTS, NAMELY, LABORATORY TESTING FOR MEDICAL PURPOSES IN IN VITRO AND IN VIVO, LABORATORY TESTING FOR GENETIC PURPOSES, AND LABORATORY TESTING FOR BIO-RESEARCH PURPOSES