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<br />CORE LABORATORIES
<br />Q U A L I T Y A S S U R A N C E M E T H O D S
<br />REFERENCE s A N D N O T E S
<br />Report Oate: 07/24/96
<br />This flag is also used when estimating the
<br />concentration of a tentatively identified compound.
<br />K - Indicates that a surrogate recovery is outside the
<br />specified quality control limits.
<br />Y - used to identify a spike or spike duplicate
<br />recovery [hat is outside the specified quality control
<br />limits.
<br />2 - Indicates a relative percent difference fora spike
<br />and spike duplicate is outside the specified quality
<br />control limits.
<br />• - Indicates a relative percent difference for a
<br />duplicate analysis is outside the specified quality
<br />control limits.
<br />- Used to indicate that a standard is ou[si de
<br />specified quality control limits.
<br />
<br />Page 3
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