 鲜花( 17)  鸡蛋( 0)
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公认的硬度划分是:6 W8 }8 l C1 s: v
Water containing calcium carbonate at
& K+ _# v3 f; h3 q, Rconcentrations below 60 mg/l is generally considered as soft; 60–120 mg/l,# L# C4 y! e9 T& d3 ?) x. v
moderately hard; 120–180 mg/l, hard; and more than 180 mg/l, very hard3 \; g6 Q( A5 b! O. K) E1 ]8 F* B
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:
. C- `! N3 N& n N rMontreal 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.$ J8 h! ~2 m$ y' }% v2 P0 D! O' A
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。/ X$ L; G7 ~. B" M
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