Dialyser Specif cations

Contemporary hollow fibre dialysers have nominal surface areas ranging from 1.0 to 2.2 m2, although the trend in clinical practice is to use devices at the upper end of this range. Both the length (approximately 23 cm) and inner diameter (i.d.: usually 200 |im) of hollow fibres used for clinical HD are fairly standard. The i.d. parameter represents a compromise between the desirable characteristics of a short diffusive pathlength and high shear rate with a small i.d., and a low axial pressure drop and hydraulic resistance with a large i.d. fibre. On the other hand, the variation in wall thickness is considerable, with values ranging from 6 to 55 |im. (See below for an expanded explanation.) Based on the surface area of the dialyser, the total number of fibres comprising the dialyser ranges approximately from 7000 to 12000.

Solar Panel Basics

Solar Panel Basics

Global warming is a huge problem which will significantly affect every country in the world. Many people all over the world are trying to do whatever they can to help combat the effects of global warming. One of the ways that people can fight global warming is to reduce their dependence on non-renewable energy sources like oil and petroleum based products.

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