1 Salt-based units need to have the salt replenished on a regular basis, usually at a cost of anywhere from $2-$15 a month depending on the cost of the salt ($3-$8 per 40-pound bag) and the amount of salt used by your system.  Before buying a water conditioner, find out exactly what impurities are in your water supply.
Professor Jean-Jacques Muyembe-Tamfun. Professor Jean-Jacques Muyembe-Tamfun is Director-General of the National Institute for Biomedical Research, Democratic Republic of the Congo (DRC), and Professor of Microbiology at Kinshasa University Medical School. He is also an Adviser to WHOâs IHR Emergency Committee regarding Ebola.
For other uses, see Rousseau (disambiguation). Jean-Jacques Rousseau (/ruËËsoÊ/; French: [ÊÉÌÊak Êuso]; 28 June 1712 â 2 July 1778) was a Francophone Genevan philosopher, writer, and composer of the 18th century.