(a) From Box 5-2, estimate the minimum expected coefficient of variation, CV(%), for interlaboratory results when the analyte concentration is (i) 1 wt% or (ii) 1 part per trillion.
(b) The coefficient of variation within a laboratory is typically ~ 0.5 - 0.7 of the between laboratory variation. If your class analyzes an unknown containing 10 wt% NH3, what is the minimum expected coefficient of variation for the class?