 鲜花( 17)  鸡蛋( 0)
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公认的硬度划分是:7 u# m6 i3 k* }! Y" C! v; h
Water containing calcium carbonate at
: r G/ _3 d: z& [3 v# C! ^concentrations below 60 mg/l is generally considered as soft; 60–120 mg/l,
. z1 j: ~ Z% G. n! D+ a( a; Bmoderately hard; 120–180 mg/l, hard; and more than 180 mg/l, very hard& E+ D# [4 `" J. _1 q+ n8 y
爱城的水硬度在150-160之间,属于硬水,但不算很硬。这种硬度的水不需要在水厂进行软化处理,适当硬度的水对健康不但无害,反而有益。以下是加拿大主要城市水硬度指标:
( J5 [/ e: @* H% vMontreal 116 ppm,Calgary 165 ppm, Regina 496 ppm, Saskatoon 160-180 ppm, Winnipeg 77 ppm,Toronto 121 ppm,Vancouver < 3 ppm, Charlottetown, PEI 140–150 ppm, Waterloo Region 400 ppm, Guelph 460 ppm.
0 i @/ c6 c& f1 E0 W在家里根本不需要安装什么软化水装置,而且都要把水烧开的做法也不可取,钙和镁都沉降了下来,其实这两种元素都是身体需要的,直接喝冷水最好,如果肚子能适应的话。
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