MARTEK

ENVIRONMENTAL AND MARINE SCIENCE MEASURING AND CHECKING APPARATUS AND INSTRUMENTATION, COMPRISING: WATER QUALITY MONITORING UNITS, WATER QUALITY ANALYZERS, METERING UNITS, SALINOMETERS, OXYGEN MONITORS, PH MONITORS, BATHYTHERMOGRAPHS, TRANSMISSOMETERS, PH/ION SELECTIVE ELECTRODE METERS, AND WATER QUALITY CONTROLLERS; AND ELECTRICAL, SCIENTIFIC DATA ACQUISITION INSTRUMENTS COMPRISING: DATA ACQUISITION UNITS, DATA LOGGERS, DATA PRINTERS, DATA READERS, AND DATA RECORDERS; AND PARTS FOR ALL OF THE FOREGING