OXYGEN SENSORS AND BAROMETRIC PRESSURE SENSORS NOTE: If you require a diffusion and/or flow-through head for your Oxygen Sensor, be sure to select from either AO-001 (diffusion) or AO-002 (flow-through) below. O2 Sensor (Soil, Thermistor) Code: SO-110 Price: $284.00 Quantity in Basket: none O2 Sensor (Soil, Thermocouple) Code: SO-120 Price: $284.00 Quantity in Basket: none O2 Sensor (Fast response, Thermistor) Code: SO-210 Price: $284.00 Quantity in Basket: none O2 Sensor (Fast response, Thermocouple) Code: SO-220 Price: $284.00 Quantity in Basket: none O2 Meter Code: MO-200 Price: $405.00 Quantity in Basket: none Diffusion Head (for O2 Meter or Sensor) Code: AO-001 Price: $33.00 Quantity in Basket: none Flow-Through Head (for O2 Meter or Sensor) Code: AO-002 Price: $33.00 Quantity in Basket: none Barometric Pressure Sensor Code: SB-100 Price: $49.00 Quantity in Basket: none Soil Thermistor Temperature Sensor Code: ST-100 Price: $45.00 Quantity in Basket: none