Thermo Fisher Scientific Prima PRO Process Mass Spectrometer 
Precision is the standard deviation observed over 24 hours.
The precision will be demonstrated by six consecutive statistical reports for the analysis of calibration bottle #1 shown below over a twenty four hour period.
The analysis cycle time for this level of precision for a single sample stream will not exceed 30 seconds (including the averaging of several measurement cycles).
The results will be reported in concentration units of % to 4 decimal places.

Thermo Fisher Scientific Prima PRO Process Mass Spectrometer 

Achieve high scanning speeds and reproducible measurements with the Thermo Scientific™ Prima BT Bench Top Mass Spectrometer. Specifically designed for process development laboratories, this process gas analyzer is a highly precise, multi-port magnetic sector gas analyzer.