 鲜花( 17)  鸡蛋( 0)
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公认的硬度划分是:
4 {) Y" }" c9 j, {. IWater containing calcium carbonate at
) Z% I9 f% v/ I1 L% j. s6 ~, g- A# K: n @concentrations below 60 mg/l is generally considered as soft; 60–120 mg/l," T5 S" {& M/ R7 s# p8 H
moderately hard; 120–180 mg/l, hard; and more than 180 mg/l, very hard$ B) _4 y4 j' b0 q& b$ |
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: c9 b3 L5 o: p' B7 B4 B
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.) _/ S- ~# \% V# G1 {$ u0 i
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。
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