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Athough different brands of conductivity meters vary, calibration procedures are similar m. generalized for <br /> of theA raliu al, <br /> . g d caltbratuon procedure follows: <br /> 1: <br /> Tum on the instrument,check the battery,and allow to warm up if necessary- <br /> essary- <br /> 2- Rinse the coriductivity probe and temperatureprobe with deianized water then <br /> the standard solution. At ForwardLandfill conductivities are Usuallywithin Placa in <br /> 500 to 1500 <br /> urnhoA therefore the 1000 os/l solution is appropriate to use. . <br /> 3. Adjust the'meter for ,the appropriate conductivity scale and temperature then .read the <br /> conductivity- <br /> 4. If required use.the "calibrate" adjustment can the meter to correct.the instrument to read <br /> the correct conductivity. <br /> The calibration process will be.recorded on a conductivity calibration log: Copies of calibration <br /> logs for each individual instrument are-kept in-a:binder-atthc office: The logs reviewed <br /> periodically to assess whether the.instrument is becoming more difficult to calibrate and <br /> diel-eore needs adjustment by the manufactiirer,or if new probes axe rcgWred, <br /> Tstrbidity Meso _ - <br /> Tumidity jn=mz=ent is subject to variations due to instrument drift. For this reason tarbidity <br /> must be calr'bzated before and after sampling on eaclr'day and at'least once more during <br /> the day. To calibrate a turbidity meter-tlrc instrument reading is adjusted to read correctly for - <br /> solutions wide a Standard turbidity. - <br /> Standard turbidity solutions are mixed f-esk according to package moons, for <br /> event. Standard solutions for =Wdii tyy are commercially available. These standards <br /> are purcliased fiesh and discarded.after slielf life has expired.. Shelf hives vary*depending on the <br /> bmd of standards usecL If pre red solution is used,the arpuation date of the solution will <br /> be no on the calibration log. _ <br /> MIthough difterent brands of turbiclZty meters vary, calibration pmc edtures are*similar for all of <br /> them. A genieralized calibration procedure follows: <br /> l. Turn on the instrument,check the baftery,and allow to warm up if necessary: = <br /> E49-Fa112310RW Amt <br /> ZAoo July 14,2000 <br />