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s' <br /> r <br /> 15M VIM <br /> r� <br /> A-3 <br /> A chain-of-custody form was used to record possession of the sample from time of collection to its arrival <br /> at the laboratory. When the samples were shipped,the person in custody of them relinquished the samples <br /> by signing the chain-of-custody form and noting the time of shipment. The sample-control officer at the <br /> laboratory verified sample integrity and confirmed that it was collected in the proper container,preserved <br /> correctly,and that there was an adequate volume for analysis. <br /> When these conditions were met,the sample was assigned a unique log number for identification throughout <br /> analysis and reporting. The log number was recorded on the chain-of-custody form and in the legally <br /> required log book maintained by the laboratory. The sample description,date received,client's name,and <br /> other relevant information was also recorded. <br /> I <br />