ARCHIVED REPORTS_1996_2 - Laserfiche WebLink

Home Browse Search

Lel Section No: 8 Page: 1 of 5 Revision No: 2.0 Date: January 15, 1994 Calibration Procedures.11Frequency 1 1; 1 1 Yf 1=1 . 1 . a 4d G,", is 1 1 :f: 1 1 1 I 11 . ! `. / 1 ^ 0441,11" yOL 1 1 1 1 1'..) / • 1 1 1 :. X41 10 %it 1 i / 1 / 1 1' ( 1 1 t .. ' /1 calibration. 8.1 Instrument Calibration Prior to use, every instrument must be calibrated according to the procedure found in the method specific Standard Operating Procedure (SOP). A list of all laboratory equipment may be found in section 17. Tables 8-1 and 8-2 list the organic mass spectrometer calibration ion abundance criteria which must be met. The analytical balances are certified once a year by a certified specialist. All balances are labelled as certified. All balances are checked monthly using NIST traceable S weights. All refrigerator, oven, and incubator temperatures are monitored daily, and all thermometers are checked for accuracy on a quarterly basis. 8.2 Calibration Standards All chemicals used by FGL Environmental are ACS reagent grade, or better. Wherever passible, standards are from sources that are traceable to the National Institude of Standards and Technology. A log book is maintained for all working standards. Each log contains the standard or code, date of working d preparation, analyst initials who prepared the standard, the manufacturers lot number, stock solution expiration date, stock analyte concentration(s), analyte concentration(s), and initial and final volumes used in dilutions. The working standard container is also labeled with 10D or code, date of standard preparation, analyst initials who prepared the standard, expiration date, analytes and analyte concentration. 8.3 Calibration Policy 8.3.1 Applicability This policy is designed to be a guideline to ensure that all data are treated alike, and thus ensuring that•data generated on any particular day of analysis are representative of the norm. However, the policies are not intended to be absolute criteria for the acceptance or rejection of any analytical data. In cases where the acceptance criteria outlined in policy or SOPS cannot be achieved then the analyst uses a non- conformance report form to document the difficulty. More than one continuing difficulty will result in a Corrective Action Report (CAR, see section 15). These are on record and will be included in a project data package if -that is required by the project plan. An example of a CAR form is shown in figure 15-1. 0 8.3.2 Linearity All calibrations should be linear unless otherwise defined in the specific SOP. FGL's definition of linearity is a calibration curve that has a linear regression equal to or greater than 0.995. For organics, if a linear regression is used, a single average response factor may be used if acceptance criteria pass. Specific protocols outlined in a given SOP will take precedence over these generic policies.