Microsart^® e.motion membrane filters for colony counting, particle testing and microscopy. The membrane filters, specifically designed for use in the Microsart^® e.motion dispenser, are individually sterile-sealed in a format packaged on a pleated band, without protective paper. The special pleating of the band of membrane filters ensures that they are perfectly flat when dispensed. The membrane filters can also be used with Sartorius nutrient pad sets.