In Central Europe, ? – 21st century, a scale used to measure the hardness of water. Symbol, °dH. One degree = 10 milligrams of calcium oxide per liter of water, which is equivalent to 17.848 milligrams of calcium carbonate.
Sorry. No information on contributors is available for this page.
home | units index | search |
contact 
|
contributors |
help | privacy | terms of use
Copyright © 2009 Sizes, Inc. All rights reserved.
Last revised: 7 February 2009.