(Hydrology and Oceanography) Aquaria, Bacteriological Samplers, Biological Samplers, Chemical Analysis System, Conductivity, Temperature, Depth Indicators and Recorders, Counting Chambers, Current Meters, Fish and Culture Tanks, Hydrometers, Incubators, Oxygen Meters, PH Meters, Photo meters, Plankton net Buckets, Pollution Monitoring, and Sampling Equipment, Radiation Monitoring Devices, Thermographs, Tide and Water Level Gauges, Turbidity Meters, Water Level Recorders, Water Quality Test Kits, Weather Instruments and Sensors.