PROGRAMMING
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it is used. If this is not possible, then the monitor should be
calibrated at least once a week.
Correction Factors Not Possible
It is necessary to calibrate for each type of RAE-Sep tube
directly with the gas to be measured and with the corresponding
RAE-Sep tube in place. It is NOT possible to calibrate with a
surrogate gas (such as isobutylene) and then apply a correction
factor. This is because the surrogate gas is often absorbed on
the RAE-Sep tube, or elutes at a different rate than the desired
gas.
