AN 15 Calibrating the Picarro Analyzer
This document explains how users can easily apply their own calibration adjustments to Picarro gas and isotope analyzers.
Since the Picarro analyzer is extremely linear, it is only necessary to use three calibration standards to calibrate each gas or isotopic species (two points define the calibration line and a third intermediate point is used for verification). The exact value of each calibration standards is not of particular importance as long as they span a representative range of values over which the analyzer will typically be operated. It is reasonable to use a concentration of zero for the low calibration value, for example. (Although it is not necessary to use more than three standards, additional standards can be used to further constrain the linear calibration coefficients.)