12 Calculating Temperature Coefficients30To determine the temperature coefficient of your sample solution use this formula:tc = 100 x CT2 - CT1CT1 (T 2 - 25) - C T2(T1 - 25)Where:tc = Temperature coefficient 25 = 25°CC T1 = Conductivity at Temp 1 C T2 = Conductivity at Temp 2T 1 = Temp 1 T 2 = Temp 2NOTE: A controlled temperature water bath is ideal for this procedure.1 Immerse the probe into a sample of your solution and adjust thetemperature coefficient to 0% (that is, no compensation) by followinginstructions as described in Section 6.5 - Temperature Coefficient.2 Wait for 5 minutes. Note T1 and CT1 (conductivity at T1).3 Condition the sample solution and probe to a temperature (T2) that is about5°C to 10°C different from T 1, and note the conductivity reading C T2.NOTE: Record your results for future reference. Ideally T 1 and T 2should bracket your measurement temperature, and should notdiffer by more than 5°C.4 Calculate the temperature coefficient of your solution according to theformula shown above.5 Enter the calculated temperature coefficient into the meter.See Section 5.5 - Temperature Coefficient.The calculated temperature coefficient will now be applied to all the meter readings.