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Chinese emery and calibration material (P/N 336229 by AimSizer Scientific Pet. Ltd. sales@aimsizer.com)is a certified reference material being used to calibrate a Hall funnel, Carney funnel or a Gustavsson funnel.The standard samples Chinese emery powder should be dried for 30 minutes in the air under the temperature of 105±10°. Then put it into the dryer and cool it to the indoor temperature.Where to buy genuine calibration powder Chinese Emery?The flow rate of Chinese emery powder was established by an interlaboratory study conducted by Subcommitte B09.02 in 1995.It represents the flow rate through the master flowmeter funnel that had been used in a previous interlaboratory study with the former Turkish emery calibration powder,which is no longer available. AimSizer Scientifc Pte. Ltd.is a world leading and reliable manufacturer of Hall Flowmeter/Hall Flow Meter Funnels and Carney Funnels. All the metallic parts are processed and supplied by qualified subcontractor according to International Standards in order to make the unit accurate and robust to satisfy the user’s requirement at cost-effective basis.AimSizer is also a major research participant in the interlaboratory study of the flow of Chinese Emery. Chinese Emery is used to calibrate a flowmeter funnel by the manufacturers. AimSizer is also the original manufacturer of Chinese Emery according to ASTM B213 and other international standards using such certified reference material.