direct flow
5.Abstract: Several measuring methods,basic principle and characteristics of flow measurement are introduced.The technique of direct mass flow measurement developed in recent years is described and the derivated mass flow system and its general construction are analized.The practical calculation equation of the mass flow has been given.
8.DETERMINATION OF PALLADIUM(Ⅱ)BY DIRECT SPECTROPHOTOMETRY AND FLOW INJECTION ANALYSIS WITH 1,8-DIHYDROXY-2-[(4-CHLORO-2-PHOSPHONIC PHENYL)AZO]-7-[(4-SULPHONIC ACID AMIDE PHENYL)-AZO]-3,6-DISULFONIC ACIDIC NAPHTHALENE

