Laboratory Fortified Sample solution (LFS) - used in preparation of Laboratory Fortified Matrix (LFM) - An aliquot of an environmental sample to which known quantities of the method analytes are added in the laboratory.
The LFM is analyzed exactly like a sample, and its purpose is to determine whether the sample matrix contributes bias to the analytical results. The background concentrations of the analytes in the sample matrix must be determined in a separate aliquot and the measured values in the LFM corrected for background concentrations.
300-LFS-A-125ML
300.0 LAB FORTIF STD 125mL
Water
1:100 to 1:1000
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