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公认的硬度划分是:
5 i ?) K6 i/ Q& _) kWater containing calcium carbonate at- C+ O6 N% g9 m) y
concentrations below 60 mg/l is generally considered as soft; 60–120 mg/l,
# g3 s; k* |% s: wmoderately hard; 120–180 mg/l, hard; and more than 180 mg/l, very hard1 S6 J, Y/ t& _0 q7 d' 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:
, D6 m8 Q4 v: J. sMontreal 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.' i# L3 _0 | R I7 c
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。5 r) G, T" E1 Q# V9 u8 {
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