Laserfiche WebLink
o Preparation and QC of Standards <br /> w The preparation and QC of standards for a particular analysis is <br /> detailed in the specific method SUP for that analysis . The <br /> preparation and QC of all standards share none common conditions, <br /> which include, but are not limited to, the following. <br /> o QC of solvents <br /> P <br /> o Uater <br /> o Use better than RSTH Grade I water <br /> H <br /> a Blanks are analyzed by the techniques used for <br /> samples <br /> o Organics <br /> o Use residue grade <br /> 6 o Extraction solvents (me methylene chloride, <br /> hexane) are concentrated and analyzed by the <br /> techniques used for samples (xe GC, GC/KS) <br /> o Non-extraction solvents are analyzed by the <br /> techniques used for samples <br /> o Preparation of Standards <br /> o Use clean, volumetric glassware <br /> o Use either calibrated analytical balances or <br /> volumetric glassware Cie microsyringes) for Measuring <br /> neat or dilute standards <br /> a QC of Prepared Standards <br /> o Initially, new standards are analyzed and compared for <br /> traceability to HOS or EPR reference standards, if <br /> available . <br /> a Repeat standards are .analyzed and compared to the lest <br /> preparation of the standard . <br /> o Traceablility standards are run every nix Months or <br /> when an out of control situation occurs . <br /> 6 <br />