Concentration profiles of 1 and 2.5 μm beads during blood flow. Hematocrit effects

E. C. Eckstein, J. F. Koleski, C. M. Waters

Research output: Contribution to journalArticlepeer-review

12 Scopus citations


Freeze-capture techniques were used to obtain concentration profiles of 1.0 and 2.5 μm latex beads in suspension flows with hematocrits from 15 to 60%. Profiles with near-wall concentrations more than twice the central concentration occurred for 2.5 μm beads in this range of hematocrits, but the near-wall excess appeared wider and shorter in 60% suspensions. For suspensions with 1.0 μm beads, the nature of the profile was dependent upon hematocrit. In all cases, at least a small near-wall excess was observed. For hematocrits of 40 and 60%, profiles for 1.0 μm beads were sometimes similar to those for 2.5 μm beads. For the 60% hematocrit and small beads, however, the excess was less than twice the central concentration in two of five trials. These findings are discussed in the context of previous experiments.

Original languageEnglish
Pages (from-to)188-190
Number of pages3
JournalASAIO Transactions
Issue number3
StatePublished - 1989

ASJC Scopus subject areas

  • Biophysics


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