TY - JOUR AU - Pieters, H. AB - Research in Action South African Journal of Science 104, November/December 2008 457 lithium heparinized (Li-heparin) tube. Duplicate samples are drawn from the Development and refinement of a same source where required for compari- sons of methods. For immediate measure- portable electronic device for ments after venepuncture, the blood is haematocrit determination mixed with the anticoagulant by tilting the tube about ten times. The tube is then decapped and inserted in the sample * b A.J. Groenewald and H. Pieters holder of the cell. Alternatively, the heparinized samples are left for 10 min to reach room temperature before measure- SMALL PORTABLE ELECTRONIC DEVICE, to Hct, they also measure sodium, potas- ments are taken. The BEM cell electrodes named a blood electrometer (BEM), was sium, chloride, urea and glucose. Capital are immersed in each sample, and a BEM developed to measure packed cell vol- and operating costs are unacceptably reading taken, from which the Hct value ume, which can be related to haematocrit high for use in primary health care and can be obtained. After successive mea- (Hct). The electronic circuitry is simple and technical skill is required. Our blood surements, the electrodes are cleaned and constructed from standard components. Be- TI - Development and refinement of a portable electronic device for haematocrit determination JF - South African Journal of Science DO - 10.1590/s0038-23532008000600018 DA - 2008-11-01 UR - https://www.deepdyve.com/lp/unpaywall/development-and-refinement-of-a-portable-electronic-device-for-0bVLec4LDn DP - DeepDyve ER -