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r� <br />' 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 /> with hydocloric acid. Use vials with care and keep them <br />' 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 /> handling. <br /> 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 . bvial muchas with wWater, shouldnstandbaboveelipd <br />'• <br /> bubbling ass possible. <br /> of vial . <br /> g , 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 /> water. Also avoid touching white teflon face with dirty <br /> fingers. <br /> 9 . Tighten cap 5ecurely, invertbubblevial and tap against hand to <br />' see that thereare no <br /> 10. Label vial using indelible ink as follows: <br /> ' a) Sample I .D. No. <br /> b) Job I .D. No. <br /> C) Date and Time. <br /> ' d) Type of analysis requested. <br /> e) your name . <br /> IL+ GK � ��n�aTtu <br />