Monitoring of stack emissions is now a fundamental condition for the operating license of many processes and industries. Selection of equipment and supplier needs to be made carefully.

Successful monitoring equipment needs to possess a series of attributes that may be summarized as follows:

• Reliable
• Accurate
• Selectable outputs tonnes per year/mg/Nm3/ppm/kg/r etc.
• Normalization inputs
• Plant status facility
• Traceable calibration
• Low Maintenance
• Secure data and data reporting
• System accreditation
• Legal compliance
• Lower cost of ownership