 鲜花( 17)  鸡蛋( 0)
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公认的硬度划分是:
% S7 x* e3 M! p6 t: K! S+ yWater containing calcium carbonate at# ?% g, t2 l( r4 H' y. ?3 w
concentrations below 60 mg/l is generally considered as soft; 60–120 mg/l,+ Z3 {5 T0 {4 m. Y3 @- e
moderately hard; 120–180 mg/l, hard; and more than 180 mg/l, very hard) z) Y- g# }9 \$ [' Y1 S9 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:
. {, [$ }3 U; C3 E/ H' o. X( |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., C- |& z" f2 a2 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。0 Q/ Z! C) {% \! c
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