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-11- <br /> 2 . 3 . 2 . 1 Containers, seals and other glassware <br /> requiring acid washing: <br /> a. Wash with an detergent solution. <br /> b. Rinse with 1 : 1 HNO3 solution. <br /> c. Rinse with tap water . <br /> d. Rinse with 1 : 1 HC1 solution. <br /> e. Rinse with tap water . <br /> f . Rinse with double-deionized water . <br /> g . Air dry, inverted, on plastic racks . <br /> 2 . 3 . 2 . 2 Containers with seals and other glassware <br /> requiring general washing : <br /> a. Wash with an alconox detergent solution. <br /> b. Rinse with tap water . <br /> C. Rinse with double-deionized water . <br /> d. Air dry, inverted, on plastic racks. <br /> 2 . 4 SAMPLE COLLECTION <br /> 2 . 4 . 1 Before entry into the field: <br /> . Review the planned activities with the supervisor . <br /> . Assemble all necessary equipment, standards, <br /> reagents, etc. <br /> . Prepare as much of the field log as possible in <br /> advance. <br /> . Calibrate pH and other field instruments. <br /> 2 . 4 . 2 Before sampling: <br /> Confer with the purger when respective well is <br /> ready. <br />