All pumps or meters at filling stations may have a tolerance of not over five cubic inches per five gallons, minus or plus. All pumps or measuring devices of a large capacity shall have a maintenance tolerance of 50 cubic inches, minus or plus, on a 50-gallon test. An additional one-half cubic inch tolerance shall be added per gallon over and above a 50-gallon test. Acceptance tolerances on large capacity pumps and measuring devices shall be one-half the maintenance tolerances.
This rule is intended to implement Iowa Code sections 214.2 and 215.20.
Iowa Admin. Code r. 21-85.21