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6. Preservatives are required for some types of samples. Use <br /> specially prepared vials from GTEL, marked as indicated <br /> below, or use the appropriate field procedure (SOP 12 for <br /> acidification) . Make note on forms that samples were <br /> preserved. Always have extra vials in case of problems. <br /> Samples for volatile analysis should be acidified below pH 2 <br /> a with hydocloric acid. Use vials with care and keep them <br /> r upright. Eye protection, foot protection, and <br /> disposable vinyl gloves are required for handling. <br /> Samples designated for expedited service and analyzed within <br /> seven (7) days of sampling will be acceptable without <br /> preservation. <br /> Acid causes burns. Glasses or goggles (not contact lenses) <br /> are necessary for protection of the eyes. Flush eyes with <br /> water for 15 minutes if contact occurs and seek medical <br /> attention. Rinse off hands frequently with water during <br /> j handling. <br /> Y For sampling chlorinated drinking water supplies for <br /> chlorinated volatiles, samples shall be preserved with <br /> sodium thiosulfate. Use vials labeled "CONTAINS THIOSULFATE" . <br /> No particular cautions are necessary. <br /> 7. Fill vial to overflowing with water, avoiding turbulence and <br /> bubbling as much as possible. Water should stand above lip <br /> = of vial. <br /> S. Carefully but quickly slip cap onto vial. Avoid dropping <br /> the teflon septum from cap by not inverting cap until in <br /> contact with vial. Disc should have teflon face toward the <br /> { <br /> water. Also avoid touching white teflon face with dirty <br /> i <br /> fingers. <br /> 9 . Tighten cap securely, invert vial and tap against hand to <br /> see that there are no bubbles inside. <br /> i <br /> 14. Label vial using indelible ink as follows: <br /> a) Sample I.D. No. <br /> b) Jab I .D. No. <br /> C) Date and Time. <br /> d) Type of analysis requested. <br /> e) Your name. <br /> C� Gkt)t NJMA ' R <br /> 'rE tH��lt Ili,l 11t <br />