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Section No. 2.2.5 <br />Revision No. 0 <br />Date May 1, 1977 <br />Page 1 of 3 • <br />5.0 ANALYSIS OF SAMPLES <br />An activity matrix summarizing the major quality control <br />related functions for sample analyses is presented in <br />Table 5.1 at the end of this section. <br />5.1 Verify Documentation and Inspect Sample <br />1. Upon receipt of the sample from the field, remove <br />the filter folder from its shipping envelope and examine <br />the hi vol field data sheet, Figure 3.2, to determine whether <br />all data necessary to verify the sample for analysis and to <br />calculate concentration have been provided. Void the sample <br />if: (1) data are missing and unobtainable upon inquiry to <br />the field operator, and (2) sampler malfunction is evident,. <br />e. g., obvious faceplate gasket leakage. <br />2. Record the filter number on the hi vol field data <br />sheet and on the laboratory data log, Figure 3.1. <br />3. Examine the shipping envelope for sample material <br />that may have become dislodged from the filter. If such <br />material is observed, recover as much as possible by brush- <br />ing it from the envelope to the deposit on the filter with a <br />soft camel hair brush. <br />4. Examine the filter for insects embedded in the <br />sample deposit and if found, remove them with Teflon tippe3 <br />tweezers, using care to avoid disturbing more of the sample <br />deposit than is necessary. If more than 10 insects are <br />observed refer the sample to the supervisor for a determina- <br />tion whether to accept or reject it. <br />5. Record data verification, sample inspection, and <br />removal of insects under Remarks in the laboratory data log, <br />Figure 3.1. <br />5.2 Filter Equilibration <br />Ecuilibrate exposed filters in a conditioning environment • <br />for 24 hours, additional equilibration time up to 48 hours <br />may be necessary for very damp filters. An equilibration <br />