 鲜花( 17)  鸡蛋( 0)
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公认的硬度划分是:
2 X6 w& [1 R& k4 r( ]% H# R6 `Water containing calcium carbonate at4 y. v2 U9 D. G4 l8 f
concentrations below 60 mg/l is generally considered as soft; 60–120 mg/l,+ p$ _1 }4 g3 w! B
moderately hard; 120–180 mg/l, hard; and more than 180 mg/l, very hard/ X4 }7 @" e* j8 X
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:4 K+ i% c2 u* z5 f1 w
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.
$ ?$ K- \4 G0 B+ r6 N5 C p2 T7 r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。* J X% h4 a" t9 J+ q# _
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