low hardness (soft water)

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• Soft water — the term used to describe types of water that contain few or no calcium or magnesium metal cations. The term is usually related to hard water , which does contain significant amounts of these ions.Soft water usually comes from peat or igneous… …   Wikipedia

• Water — This article is about general aspects of water. For a detailed discussion of its properties, see Properties of water. For other uses, see Water (disambiguation) …   Wikipedia

• soft — softly, adv. softness, n. /sawft, soft/, adj., softer, softest, n., adv., interj. adj. 1. yielding readily to touch or pressure; easily penetrated, divided, or changed in shape; not hard or stiff: a soft pillow. 2. relatively deficient in… …   Universalium

• soft — I. adjective Etymology: Middle English, from Old English sōfte, alteration of sēfte; akin to Old High German semfti soft Date: before 12th century 1. a. pleasing or agreeable to the senses ; bringing ease, comfort, or quiet < the soft influences… …   New Collegiate Dictionary

• soft — adj., adv., & n. adj. 1 (of a substance, material, etc.) lacking hardness or firmness; yielding to pressure; easily cut. 2 (of cloth etc.) having a smooth surface or texture; not rough or coarse. 3 (of air etc.) mellow, mild, balmy; not… …   Useful english dictionary

• soft — /sɒft / (say soft) adjective 1. yielding readily to touch or pressure; easily penetrated, divided, or altered in shape; not hard or stiff. 2. relatively deficient in hardness, as metal. 3. smooth and agreeable to the touch; not rough or coarse. 4 …  

• soft — [[t]sɔft, sɒft[/t]] adj. and adv. er, est, n. interj. 1) yielding readily to touch or pressure; not hard or stiff 2) mel relatively deficient in hardness, as metal or wood 3) smooth to the touch; not rough: soft skin[/ex] 4) pleasant or… …   From formal English to slang

• Hard water — is the type of water that has high mineral content (in contrast with soft water ). Hard water minerals primarily consist of calcium (Ca2+), and magnesium (Mg2+) metal cations, and sometimes other dissolved compounds such as bicarbonates and… …   Wikipedia

• Copper — For other uses, see Copper (disambiguation) …   Wikipedia

• HSAB theory — The HSAB concept is an acronym for hard and soft (Lewis) acids and bases. Also known as the Pearson acid base concept, HSAB is widely used in chemistry for explaining stability of compounds, reaction mechanisms and pathways. It assigns the terms… …   Wikipedia

• Diamond simulant — Due to its low cost and close visual likeness to diamond, cubic zirconia has remained the most gemologically and economically important diamond simulant since 1976. The high price of gem grade diamonds, as well as significant ethical concerns of… …   Wikipedia