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Air permeability testing equipment determines fineness of Portland cement. The Blaine Apparatus is comprised of a calibrated U-tube manometer, ground glass joint, stainless steel test cell and plunger. As well as a rubber aspirator bulb and perforated disc. The apparatus comes complete with an 8oz. bottle of red manometer fluid, filter paper and wood block. The ToniPERM Electronic Tester is comprised of a microprocessor control with printer interface and U-tube manometer with level sensors. In addition a diaphragm pump, measuring cell, a box of 41mm round filter paper (500/bx), and a box of dust filters (100/bx) come included. The tester also has software available to upload data to a local computer for external storage.