PPM Value
The PPM value is a relative number. It stands for part per million. This value stands, for example, for the rest oxygen value found in the tunnel of a system using a cover gas. 10 000 ppm correspond to 1%.
The PPM value is a relative number. It stands for part per million. This value stands, for example, for the rest oxygen value found in the tunnel of a system using a cover gas. 10 000 ppm correspond to 1%.