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S. At the time of receipt of samples by the laboratory, the <br /> ' shipping container will be inspected and the sealing <br /> signature will be checked, the samples will be inspected for <br /> condition and bubbles and the temperature of a representa- <br /> tive sample container will be measured externa)ly by a <br /> thermocouple probe (held tightly between two samples) ant] <br /> recorded. The laboratory 4r numbers will be placed on the <br /> labels, in the accession log, and on the chain of custody <br /> form. if samples are acidified their pH will be measured by <br /> narrow range pH papre at the time of opening fir analysis. <br /> All comments concerning procedures requiring handling of the <br /> samples will be dated and initialed on the form by the <br /> laboratory person performing the procedure. A copy of the <br /> completed chain of custody form with the continents on sample <br /> integrity will be returned to the sampler. <br /> k " <br /> a <br /> 3 <br /> E <br />