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Air Permeability Tester is suitable for determining the resistance to the passage of air of most textile materials. Then how to calibrate about it? Calibration Plate There are built-in A/C values for eight orifice plates. Each orifice plate has a…

C-Formaldehyde content in 1g sample, μg/g KA-Concentration of standard formaldehyde solution, μg/mL A-Measured absorbance of test specimen A0-Measured absorbance of blank reagent AA-Measured absorbance of standard formaldehyde solution m-mass of test specimen, g The customer needs to prepare the standard…