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APPENDIX II <br /> CONTAINER PREPARATION <br /> • General procedure for all containers <br /> (1) Inspect containers. Discard if deteriorated or if contaminated to the <br /> extent that they cannot be cleaned. <br /> (2) Rinse well with tap water. <br /> (3) Wash containers and caps using a non-phosphate detergent, warm water and <br /> a brush. Alternatively, the dishwasher may be used if appropriate. <br /> (4) Rinse well with tap water. <br /> (5) Rinse at least five times with portions of deionized water. <br /> (6) Invert and let dry. Reinspect before storage. <br /> Containers for Metals Analyses <br /> (1) Clean using the General procedure above. <br /> (2) Soak container with dilute nitric acid at least overnight. ( Say be stored <br /> longer. ) <br /> (3) Rinse at least five times with deionized water. <br /> (4) Invert and air dry. Inspect and label with date and I.D. before storag <br /> e. <br /> Containers for Bacteriological Samples <br /> (1) Clean using the General procedure above. <br /> (2) Add sodium thiosulfate and sterilize before storage. <br /> Containers for Organic Samples <br /> (1) Clean glass containers using the procedure for metals samples using a <br /> chromic acid rinse after the detergent wash. <br /> (2) Rinse at least twice with Pesticide quality acetone. <br /> (3) Air dry. Residual acetone vapors should be removed by using vacuum to <br /> draw air through the container. <br /> Containers for Oil & Grease <br /> (1) Clean glass containers- using the General procedure using, a chromic acid <br /> rinse after the detergent wash. <br /> (2) Rinse at least twice with Freon. <br /> (3) Air dry and store covered. <br /> 6 <br />