Figure 6From: An experimental and numerical study of the flow and mass transfer in a model of the wearable artificial kidney dialyzer The dependence of the ultrafiltration coefficient on the trans-membrane pressure (experimental results). Note that when roller pump is used with afterload, significant backfiltration (negative ultrafiltration) is obtained and thus, the TMP is negative whereas in other cases, the TMP is positive showing maximum values when the WAK pump is used.Back to article page