5
■
Mechanism of measurement
The following constitutes the procedure for measuring oral breath concentrations:
1.
Collect oral breath samples and inject the specified volume of gas into the column.
2.
Separate volatile sulfur compounds from the gas by using the column and detect the
gases with the semiconductor gas sensor.
3.
Calculate gas concentrations from the peak patterns obtained.
■
Components and configuration
Shown below are the components and configuration for the OralChroma.
Pump
Filter
Flow rate sensor
Sensor
Control unit
Column
Oral gas
Ambient clean air
Exhaust
Inlet
Temperature controller
Column unit
Power
supply
PC
（
Data
）
Supplied syringe
