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10. Sample Handling • 10.1 Refrigerator Storage and Temperature Lot Samples may be stored in a refrigerator at the consulting office prior to transport to the laboratory Refrigerator storage is maintained under the following conditions ' 0 Refrigerators used for sample storage are dedicated for that usage only(no food or other materials are stored in sample refrigerators) • Refrigerators can be locked from the outside by a sample manager,and only the sample manager has access to samples while in storage. • Refrigerators are maintained at temperatures between 2 to 4°C, and are adjusted daily depending on thermometer readings • Each refrigerator contains a dedicated, reliable thermometer The thermometer is designed for use in a refingerator and is fixed/secured to the inside of the unit The thermometer range is specific for measuring temperatures in the 2 to 4°C range • A temperature log is kept on the outside of the refrigerator in a lightweight, three-ring binder, or similar logbook Temperatures are recorded daily or when the refrigerator is open for sample management • Completed COCs are kept with the samples stored in the refrigerators The CDCs may be held on a clipboard outside the refrigerator,or may be placed inside the cooler if the entire cooler is placed inside the refrigerator • If a cooler is placed to the refrigerator,the cooler lid remains open to insure that samples are maintained at the refrigerator temperature 10.2 Cooler Packing • The sample coolers are packed as directed by the receiving laboratory Standard procedures for cooler packing include • The cooler contains enough ice to maintain the required temperature of 2 to 4°C (roughly 20 percent of the volume of the cooler) • Water ice(not dry ice or ice packs) is used for shipping • The ice is placed above and below the samples in at least two sealable plastic bags This requires that the packing/divider material is removed and replaced • The COC is placed in the cooler in a sealed plastic bag, and the cooler lid is taped closed to secure it for transport and to minimize loss of temperature A custody seal is placed vertically across the seam of the cooler lid i I • I