Model 10072 is a set of two Class ZZ NIST traceable GO/NO GO pin gauges to audit the inside diameter of the nozzle on WINS Impactors of any manufacturer, per the exact EPA 40 CFR specifications.
Model 10072 is a set of two Class ZZ NIST traceable GO/NO GO pin gauges to audit the inside diameter of the nozzle on WINS Impactors of any manufacturer, per the exact EPA 40 CFR specifications. If the nozzle diameter is not perfect, the PM2.5 cut point will be incorrect.