In general, LIP cigarette designs that employ low permeability bands have band permeabilities of between 3 and 15 cm-min, as measured by the CORESTA method. The optimum band width has been found to be between 5 and 7 mm. Measuring these low permeabilities is difficult because existing permeability measurement devices have been designed to operate above 20 cm-min using at least a 1 cm² orifice. In order to accomplish these measurements as well as cover the wide range of cigarette paper widths used commercially, we have found that a 2 × 15 mm orifice works best. However the small orifice size results in such low airflows that special precautions must be taken to insure that permeability readings are accurate. We will discuss the impact on these measurements by the direction of air flow through the sample as it relates to very low flow readings. A test protocol will be presented to eliminate the errors that can creep into these very delicate measurements.