 鲜花( 17)  鸡蛋( 0)
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公认的硬度划分是:
3 \% n; T8 v) A. r- B( bWater containing calcium carbonate at! k) B0 |' C5 o, x7 Z# \
concentrations below 60 mg/l is generally considered as soft; 60–120 mg/l,
6 h: a D. k2 T, U1 f5 ~moderately hard; 120–180 mg/l, hard; and more than 180 mg/l, very hard
" T, ^' }. C# @/ F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:
. R- U/ d8 ~/ L% d9 D8 BMontreal 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.
2 g+ _/ u$ i$ \% s: ~; \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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