 鲜花( 17)  鸡蛋( 0)
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公认的硬度划分是:
8 w* Q5 {' A- Q' @5 z/ PWater containing calcium carbonate at
( g( B, M; x7 E d a7 c. jconcentrations below 60 mg/l is generally considered as soft; 60–120 mg/l,
/ s; y3 M4 f+ @# W) y+ b4 Z& Pmoderately hard; 120–180 mg/l, hard; and more than 180 mg/l, very hard, D2 A) F \/ s
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:: O& u6 D: e3 L( m# d' @1 n8 k: v
Montreal 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.
8 H" H% ]' V2 T B1 n- u, P0 ]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。' T3 M, D- v" T$ c" \5 V: g' S$ k
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