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2. Rinse the pH probe and temperature probe with deionized water then glace in the PH 7 <br /> i solution. <br /> j <br /> 3. Adjust the meter for the appropriate tempetanm theft rad the pFL <br /> 4. If required the "Calibrate" Austment on the meter to con=t the iastr=ent to <br /> read <br /> pH 7. <br /> 5. Rim the pH and teraperature probes with deicnimd water and place in the pH 1,D <br /> solution (wte: at Forward pH is umaify above 7therefore It is <br /> appropriate to use the ph 10 standaiL If the PH is below 7 then the pH 4 standaN should <br /> be use <br /> 6. Use the "slope"adjustment to coatctthe meter to pmpulyread pH lQ. <br /> 7. Pepeat steps 7 to 6 until the meter reads pH-7 and 10 as closely as dile_ <br /> The <br /> cahibration process '11 be recorded on a pH calibration Copies of c abibratiou logs for <br /> each'.individud iustrument acre kept ina. bfiWer At of fite. The togs arc revicwzd periodically <br /> to asp whether the ` ent-is. {eco to cab-bme and therefore.needs <br /> adjustzxzent by the manufacture4 car if new <br /> C ru�uctiv' t�tetcr <br /> Conductivity Mcwa=ent is subject to vxiafi ns due to temPmtme 2W inst=nent drift, For <br /> this rca an conductivity metas Anust be ling on each day and at <br /> least rinse more during the day. To ca li ty meter the fiLM=ent reading is <br /> d to read corr=tly for solud=vith a Standard <br /> . conductildty. <br /> Stuxhird conductovity solutions are mixed fi=k accardmig to e ft ti for tach <br /> tit, s Mndmd so ludOw for Mnd=drhY , IWO, car 10,000 ars <br /> *mMercially available. These standards =pumbased fi=h and dicarded after shW Be has <br /> Shelf Uves vary depeadmig on the brand of sunduds, usa if prepnpmd solution is <br /> the expiration date of the solution nowd on dw calibration log. <br /> { <br /> 23 &t9- 01W 1O J July 14,2000 <br /> ICsr .tnc. <br />