 鲜花( 17)  鸡蛋( 0)
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公认的硬度划分是:
0 D+ ^* x+ T& C6 O7 p" T7 \3 yWater containing calcium carbonate at
2 f. E$ q, o5 H- _5 g5 I7 s+ Kconcentrations below 60 mg/l is generally considered as soft; 60–120 mg/l,* X: e. h0 B$ s3 J# Q
moderately hard; 120–180 mg/l, hard; and more than 180 mg/l, very hard. l! N9 O* `1 P' o, n
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:, t- H) n. {7 i1 l" m
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.
% Y/ j0 [, Y& s: J ], n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。6 r7 O! C r9 ]$ L p) A8 u
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