The validation sample (NB) was tested in triplicate to determine the validity of the experimental procedure. The same ion-selective electrode was used for NB as the calibration standards. Use the slope and intercept from the previous question to answer the following: NB Measured potential (mV) #1 1951 #2 1964 #3 1978 To find NB, you will use each "measured potential" to interpolate the log of the concentration. Each log concentration will then be converted to concentration, in units of mg/L by taking the antilog The concentration of NB#2 is 0.931 mg/L Which measurement limits the reported concentrations to three significant figures? concentration of stock