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t Although different brands of conductivity meters vary, calibration procedures are similar of them. A generalized calibrationedur roc a p follows: ; 1: Tarn on the instrument,check the battery,and allow to warm up if nye '. Rinse the conductivity probe and temperature.probe with deionized water then lace ' the standard solution., At Forward Landfilf conductivities are p m DIY within 500 to 1500 umhos/l,therefore the 1000 umhoM solution is appropriate to use. . Adjust the meter for the appropriate conductivity scale and temperature then read the conductivity. 4_ If required use.the "calibrate" adjustment on the meter to correct_the instz ezment to read the correct conductivity. The calibration-process will be.recorded on a conductivity callbmtzon-log: Copies of calibration~ _ logs for each individual•instrument are-kept in-a:binder-at-�e:office: The Togs are reviewed periodically to assess whether the,instrument is becoming more diffscult to +caiz'br�ate and therefore needs adjustment by the manufacturer,or if new probes a=-required. Turbidity Pvfctcr _ _ - -. `} Turbidity measurement is subject to variations due to instrument daft. For this Fyson turbidity meters must be calibrated befare and after sampling on each day and aL least Duce more duffing the day. - To cah-b=c a turbidity meter-thc R=ument reading is adjusted, to read correctly for - solutions with a standard turbidity, _- Standard turbidity solutions are maxed fresh, according to package instructions, for each sampling event. Standard solutions for turbidity are couurrescially available.. Theses standards are P and discardedatcr shelf life has expired, Shelf lives vary depending on the brand of standards used. If pre solution is used,tlic CVha$oti date of the sohrtion Va be noted on the cah'bration log. ' Although different brands of turbidity meters vary, calibration procedures an-similar for all of them. A generalized calibration procedure follows: 1. Turn on the instrurnerit,check the battery,and allow to warm up if necessary: _- C 01123 i ORM A-4 I*14,20M idles,tr