 鲜花( 17)  鸡蛋( 0)
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公认的硬度划分是:6 o9 h W0 g$ u, @: ]4 ^
Water containing calcium carbonate at1 d9 X4 H; U1 q% a8 v) n' V
concentrations below 60 mg/l is generally considered as soft; 60–120 mg/l,
0 z& n3 U# ?' V# b3 D8 M) |/ Omoderately hard; 120–180 mg/l, hard; and more than 180 mg/l, very hard1 X: [, r5 V: A2 H+ J
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:2 l! x3 a- a" S$ i, E6 o
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.3 {" @3 [! [& }* R+ x1 N/ U
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。$ |+ \, ?3 r% |
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